We've also noticed more "mistakes" on our bills over the last couple of years, in places where we're not known. Never had any problems in our regualr haunts. We always keep tabs on what we have, so we know exactly what the bill should come to, and always pay at the time for anything we have in the
hotel bar/restaurant, although they don't seem to like that. We had the old "Why you don't spend your money in my bar?" moan a couple of years a go, and although we loved the place, and would have been happy to return twice a year, we never went back. They just don't get it. If they hassle people like that, they lose their custom. Plenty more places to chose from. We've found another one we like, and we'll stick with it unless we have problems.
I have met a lot of people who would never go back to Turkey because they've had a bad experience with one hotel, or restautrant. That's unfair. We've been going 11 years, and had our share of rude, greedy people, but we've learned how to deal with them and nothing would put us off now. It's my money, and I'll decide where and how to spend it.