The best restaurants serving Fast food food in Newtownbreda Castlereagh South Eastern NI

My wife ordered me the bacon BBQ stacker king box and then i got the it in a wrapper and threw into a bag which was small and I returned the meal and ask manager why a small and stated it was all one size when it clearly shows LARGE SIZE AND the manager contradicting it and was rude person and when I showed it from the board menu and still arguing it's one size and it looked like a double cheese burger from Macdonald's and was so insulting and I'll never be back after driving 3 mile to return the meal which was pathetic service beware of Forestside burger king staff and don't listen to the customers.