Weird deposit into my pokerstars account?

[jt51]

I just started playing on Pokerstars a few days ago. I made a measly 10 dollar deposit just to mess around. But I just logged in and I see an extra 50 bucks in my account. In my history it says "CREDIT PURCHASE" for 50.00. I did not initiate this transaction and no funds are missing from my bank or epassporte account. So anyone know what the deal is? Did they screw up somehow?