same thing happened to me once. I bought a 3 or 4 dollar part online and someone got my card info. I had a ton of adult sites charged to that card and some international calls too. Most refunded me right away but a few never did. I think I ended up on the hook for about $150 if I remember right. The original bill was well over $500.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!