KitKat complaint?
Make it sting!
We help resolve your complaint! Our AI cyber hornets are trained to help you write an effective KitKat complaint letter, and make sure your case gets taken seriously.
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KitKat customer service
- Contact number
- 0800 604 604
- Customer support
- www.kitkat.co.uk
- Head office
- Nestlé UK Ltd., Haxby Road, York YO31 8TA, United Kingdom
- Twitter / X
- @KITKAT
- Social media
Contact details checked on 13 Nov 2026
Why use our complaint platform?
Written in minutes
We help you write an effective complaint in minutes. Our AI cyber hornets are trained on thousands of complaint letters that actually worked.
We will make some noise!
Your complaint gets the attention it deserves. Our cyber hornets could post it on social media, send it by printed letter or use other escalation tools at our disposal.
Your personal case coach
Our AI models open a case file and keep coaching after you file: what to reply, when to push, and how to escalate if nothing happens.
You are not alone
Join 73,608 consumers who refused to be ignored. Our community is there for advice while you chase your resolution.
Is KitKat legit?
LegitNestlé sells KitKat in the UK and Ireland, so the bar is genuine, though even a famous bar can come out wrong, from a finger with no wafer to a white coating before its date. Once it is eaten there is nothing to show, so the wrapper with its batch code is your proof.
What we checked
- Created in York in 1935
- Began as Rowntree's Chocolate Crisp
Watch out for
- A bar with a finger of solid chocolate and no wafer, where the wrapper and its batch code are the evidence.
- A white, dusty film on the chocolate well before the best-before date printed on the pack.
- A KitKat bought in the United States, which Hershey makes under licence rather than Nestlé.
Found a KitKat finger with no wafer?
We help you write it, it gets its own public page, and you can have it sent to KitKat as a formal letter.
File a KitKat complaintCommon customer service questions about KitKat
How do I file a complaint about KitKat?
Do you have a dispute or a bad customer experience with KitKat? Report it through our website to maximize the chance of getting it resolved.
We help you write an effective complaint in minutes. Our AI models are trained on thousands of effective complaint letters. Then we push it through emails, social media, paper complaint letters and other tools at our disposal. And you are not alone: our helpful community is there for advice.
How do I contact KitKat customer service?
Call Nestlé Consumer Services, the team that answers for KitKat in the UK and Ireland, on the UK freephone number 0800 604 604, or use the web form on the KitKat contact page, linked in the contact details above. Have the wrapper with you: consumer care usually asks for the batch code, the best-before date, the product and pack size, and where you bought it.
Something wrong with a bar? Start your complaint here as well, and we push it out to KitKat by email, social media and printed letters.
What should I do if there is something wrong with my KitKat?
If a KitKat bar is faulty, for example with no wafer inside, white bloom, a stale taste or something in it that should not be there, stop eating it and keep the wrapper. Photograph the bar and the wrapper with the batch code and best-before date in view, keep any foreign object sealed in a bag, and report it to Nestlé Consumer Services on 0800 604 604 or through the KitKat contact page, saying where and when you bought it.
If anyone was hurt or had a reaction, get medical advice first and write down what happened.
Foreign object or a bar not as it should be? Raise it through our complaint process: our trained AI opens a case and keeps coaching you on what to send Nestlé next.
Can I get a refund for a faulty KitKat?
Yes: for a faulty KitKat, you can ask the shop where you bought it for a refund or replacement, or report it to Nestlé Consumer Services with photos, the batch code and the best-before date and ask what it can offer. Under UK consumer law, food sold to you has to be of satisfactory quality, and the shop that sold it is responsible for putting a faulty product right, so keep the receipt.
Keep the wrapper even after the bar is gone: the codes on it let the maker trace the batch.
Refused a refund you believe you are owed? We help you write the complaint in minutes, with the codes, the receipt and the photos set out clearly.
Who makes KitKat in the UK?
In the UK and Ireland, KitKat belongs to Nestlé, through Nestlé UK Ltd., which is registered in York, the city where the bar was first made in 1935 as Rowntree's Chocolate Crisp. In the United States, KitKat is made and sold by Hershey under licence from Nestlé, so a problem with a bar bought in the US goes to Hershey rather than Nestlé UK. For a bar bought in the UK or Ireland, Nestlé Consumer Services on 0800 604 604 is the route.
What do people complain about most at KitKat?
Nothing has been reported about KitKat here yet. Our research shows what typically goes wrong at chocolate and confectionery brands: bars with missing wafer or solid chocolate, white bloom or a stale taste before the best-before date, broken or melted bars, foreign objects, packs that seem smaller than before, and allergen or ingredient questions.
Unwrapped a KitKat and found no wafer, or something that should not be there? Be the first to report it: your case opens the record for the next KitKat buyer who finds the same.
What happens after I submit my complaint?
Your complaint gets its own public page on Complain.biz and we get to work: we bring it to the attention of KitKat through emails, social media, paper complaint letters and other tools at our disposal.
And we stay with it after you file. Our trained AI opens a case file for you and keeps coaching: what to reply, when to push again, and how to escalate if nothing happens.
Can other consumers help me with my KitKat complaint?
Yes. We have an active community of consumers, and complaints here are public: people who ran into the same problem with KitKat can give you advice or back you up with their own story. A complaint with a community behind it is much harder to overlook.
KitKat complaints
Helpful experiences shared by KitKat customers. Search, discuss and connect with other people in our community.
KitKat complaints per month
Dec 2025 - Nov 2026Complaints filed on Complain.biz about KitKat in each of the last twelve months.
No complaints about KitKat yet. Yours can be the first.
How KitKat compares
KitKat customer service compared to others in the Food and Beverage Brands category.
| Company | Complaints | Biggest problem |
|---|---|---|
| Fray Bentos | 357 complaints | Hardly any meat in the pie 50% |
| Walkers Crisps | 42 complaints | Stale or flavourless crisps 38% |
| Cornetto | 9 complaints | |
| Magnum Ice Cream | 2 complaints | |
| KitKat (this page) | 0 complaints | No complaints yet |
| Hovis | 0 complaints | No complaints yet |