I find myself in a frustrating situation, and I was hoping I could get some help with it.

At the start of this month I heard that this week there was going to be a special on mass effect 2 DLC so I went out and bought a pre-paid 1600 microsoft point card (I don't like linking my credit card to accounts because I'm paranoid about being hacked). Time went by, and last Wednesday (jul 20) I went to visit my father in LA for a week. I returned yesterday to find that (drum roll) my account had been hacked, my language changed to Russian, my gold subscription transferred to somewhere in Russia, my "latest played game" was Battlefield, which I've never played, and of the 1600 points I bought only 80 were left. I've looked through my email and windows live ID, neither of which show any signs of having been broken into, with their 12 and 15 character passwords respectively, which leaves me clueless as to how they managed to hijack my account in the first place. The damage was done however, and now my account is being investigated for the next 20 days in order to determine what happened. Because the investigation will take so long I was informed that once it was over the 1600 points would be returned, and I would receive a free month of gold to compensate for this one. That is all well and good because I'm going to be out of town and without internet from about an hour from now until next Wednesday as I visit my mother, who doesn't have internet because quite frankly she doesn't understand technology (this woman once used yahoo to search for google to search for yahoo mail). So, my problem is that by the time the investigation is through and I can recover my points, the sale on the mass effect 2 dlc will be over, which was the reason I bought the microsoft points in the first place. Ironically, it was probably the microsoft points which made my account such an enticing target to begin with. It reads like some kind of first-world-problems greek tragedy. *sigh* So, can you help me out?