Discussion moved to Top Threats.
There is another post about AV Security 2012 already in Top Threats (here) where techrumy says that this rogue program comes with a bonus rootkit infection (which is not good). There are links in that post to removal guides but there is also a removal guide at BleepingComputer (here), and McAfee's Fake AV Stinger can be downloaded from here - it's updated daily, so it should deal with this Fake AV problem. Fake AV's can usually be easily cleaned; a rootkit is harder to get rid of. The associated rootkit, if present, may be what tech support were trying to say would cost you $90 to remove. If you want to have a go at removing it yourself, see the tips in the other thread.