Rehabguy - why don't you just call your credit card company and dispute the charge? Just say you didn't authoize that charge. Done deal. This should always be a last resort but if everything you're saying is true I would do it in a heartbeat.
We thought we'd give them a chance to fix the problem themselves first. But thanks for the suggestion, limitup, it might have been the key!
Adcenter credited us back $2,500 today after we paused all of our accounts this weekend and threatened to contact Mastercard to get our money back. Whether that made a difference or whether it was a coincidence, I don't know.
We're still trying to decide if our ROI is good enough to risk turning our campaigns back on or not. This experience caused us to waste at least 20 hours of time on the phone and email, since MSN would never call us back, even when they made the offer.
I WILL SAY, however, that all of MSN's reps (including adcenter411) were all extremely friendly and acted as if they were concerned. This is the only good point of this whole experience - the people were very courteous.