Theft

Last year an account of mine on EBAY was stolen. I had to get new cards, everything. Still EVERYDAY I get warnings from EBAY and PAYPAL that I had better get things straightened out. People are still using my account to try to buy things and no credit card exists. How do I get rid of these people. How can I get PAYPAL and EBAY to cancel everything with my name on it. Advise!