Simple, just don't go back there again.
Once I went to an Asian restaurant which someone recommended, they said it was amazingly delicious. I love Asian food, but this was just the worst I ever tasted in my whole life. First of all the waiter checked out our shoes, to see what we were wearing, then served us a totally vile meal. It honestly tasted like piss. We complained immediately and the manager apologised. We did not have to pay for the meal only for the drinks. Good thing as well, as it was completly unedible. We never went back again. Some restaurants are good, some bad, and of course what tastes good to me may not taste great to someone else etc.
I love Döner kebab, I have tried many places and can honestly say, each shop is different. We found one which is so delicious but it took time. Everyone as well has individual tastes, what someone else likes may not taste good to you.
