ATI Wonder 650 USB - no point digital channels

I bought the ATI Wonder 650 USB, turns out I blew my money away. This tv tuner doesn't support the point (in between) channels like 5.2 or 9.32 or 50.1 Also I have called the ATI customer service, every time they take my question and tell me that they have to ask their tech specialist for the problem, and promise me that they will call me back, guess what, no call back at all. I am bringing the ATI tuner back to the store tomorrow and I am getting another one, from another company.