I had this problem with a beauty salon that I had purchased a city deal for. THey were always busy, had no suitable appointments and were just generally unhelpful. I emailed citydeal and got a prompt response offering me a full refund!!
City deal +1, that salon -100000
Have used citydeal loads and think they are great. If you have a problem with bookign a deal let them know and they will sort it out.
To rant about the beauty salon in question, I don't understand why you would not treat all customers well, after that experience I would NEVER go back to them - with a city deal or without.