Worst 'birthday' ever

We were 5 people(3adults, 2 children) and ate at Ocean Basket Centurion. We ordered starters, drinks and main course. When we asked for the bill we were informed that we are not allowed to get a take-away, as it was the 20th birthday and the 'fish & chips' were on special. Our whole account came to R554, and the manager made us give back 1 piece of fish (which my son of 9 could not finish, after already having had a calamari starter) or he wanted to charge us full price. NOWHERE was there any indication of NO take-away because of the special, also the waiter never told us about the no take-away rule.<br> <br> Very disgusted by being treated this way!!!!!