Then
a) take a large plastic beaker and asked to be served in that...
b) ask for two small glasses
c) ask for half price

I was at Ezdan towers pool cafe...
it said 17% service charge on the menu and on the bill it had 15% service charge on top
When we nicely pointed it out the women (banshee) behind the till got REALLY aggressive...
what ever i will take a sandwich next time :)