Menu less restaurant

Went to ayepyep lifestyle lounge with friends. What u found weird is that they gave a menu and price list for food but not drinks. Wanted to drink wine and asked for wine list.. They don't have.. I asked they waiter how am i supposed to know what you guys have.then he goes and checks for me.. Then i asked how much... He doesn't know and he goes back to ask prices. He comes to tell me and i bought. To my surprise when the bill comes the price of my wine is 2x more than what he told me.. Then i confront him.. His response was "my mistake" ???????? "my bad" and i was like ***!!!! After arguing for a while decided to pay it. I mean what kind of restaurant doesn't have a price list.. Like the waiters make up prices as they go. I got 3 different prices for 1 a bottle i wanted to buyfrom 3 different waiters, i mean if only they had a price list such things wouldn't happen. So i feel like waiters can give you any price they feel like me giving you