McDonald’s complaint: Paid for items we did not get and also attitude of the staff member

On 16th of Jan we went to Rosny Park and used drive thru.

We were charged for a Large Fudge Sundae which we did not ask for and also The Chips and Burger were both cold.
The staff member asked what we would like and my husband said a Big Mac meal Please. My husband is partially deaf and when the staff member asked what drink would you like my Husband said a soft service please.
staff member in a very abrupt tone said that is not a drink.
I am aware that the Staff do have to put up with a lot of rude behavior from people but I believe they need to be aware that the older members need a little more patience.
I understand that using the drive thru Staff cannot see age of the person ordering so maybe just make them aware please.,

I paid $17.15 I did not check docket till I got home.

I think maybe it will be awhile before I gone to McDonalds again.

Regards
Christine