Hello. I'm not sure if this is the correct place to but it, but I had recently gotten 1,600 MS Points for my Xbox Live account on Christmas and activated it, but didn't really get around to spending them. So, yesterday, February 2nd, 2012, I decided to buy a Dead Space outfit for my avatar. As I attempted to buy it, a message popped up, telling me "Your Microsoft Points balance is too low to complete this transaction. Please add more points to your account.", and that I had no Microsoft Points what-so-ever.
I went to "Microsoft Billing and Account Management" on my computer, and saw that on January 14th, 2012, someone spent all of my Microsoft Points on "Premium Gold Pack"s, "Premium Gold Jumbo"s, and "Gold Packs".
I guess this may be proof, but I don't know.
I also noticed that I had somehow earned two FIFA 12 achievements, even though I had never played them game.
They apparently spent more Microsoft Points than I remember having. I think I had around 1680, and yet they spent 3040, which is more than I remember having.