Hi GhostA,
In years past, an 'investigation' could take upwards of a month (depending on the type of complaint, the 'fault' - if any - and the time of year). Sometimes the authorities determine that whatever 'incident' occurred is not enough to warrant any compensation. Other times, the 'incident' is serious enough that the Test Taker is granted a free retest.
Considering the 'busy' time of year, I would have to assume that an investigation would probably take a bit longer than normal. As you've pointed out, since it's only been a couple of weeks, then you probably have to wait a bit more.
GMAT assassins aren't born, they're made,
Rich