Burger King complaint: Customer service issues

Vistited the venue at Bognor Regis Butlins on Friday 11th March ordered my meal which was ok requested a chilly dip and was given 2 ate my meal.
The following day visited the venue again ordered my meal asked for some chilli dip and was told there was a charge for them, on this I informed the very rude member of staff that I hadn’t payed the previous evening she said the you were lucky ypu have to pay now the attitude on her was disgusting I asked to speak to the manager when he came to see me he was not very helpful whatsoever I demanded a full refund asked for head office number which he gave me which I now find out was bogus 😡but when he went into office to get me the number the member of staff followed him into the office which to me they were discussing the situation she came out followed by him his complete attitude was very unprofessional indeed and to be honest I know it was only 20p but it was the principle the manager name apparently is Liam Mullen your urgent attention would be appreciated the scene that was caused could have been solved…..