User Activity

Who pays the interest on my credit card from the fraudulent charges incurred when my account was hacked? Paypal notified me that it will take up to 30 days to reimburse me, so who pays the interest??
My account "purrfectworld7" was hacked and multiple fraudulent charges were made between may 21-26/14. I reported it to paypal and they are investigating. Apparently ebay does not notify sellers when someone's account has been hacked and used fraudul...