Your account should be fine, unless they are using detectable hacks in the games they are playing. If the person is then your account might get VAC Banned, in which your screwed cause there is no way to be un-VAC'd.
Now, how long has it been since you made the support ticket?
It can take up to a week for a reply, maybe a little longer, I've only seen it take 1 to 3 days personally... but have heard from others that it took 2 weeks to get there account back.