Newegg Possible credit card theft Internet

I purchased a cable from Newegg for $5.99. When I received my credit card invoice the $5.99 charge was included but there was also a charge for $659. The charge for $5.99 was dated 12/29 and the charge for the $659 was dated 12/19. When I talked to the service rep he said they could not give me a credit unless the item was returned. Since I didn't purchase the item I was certainly not able to return it. I told him that someone at their company must have stolen my card number and made the purchase and I thought because of that they should credit my account. He told me that the $659 was purchased before the $5.99 item so it couldn't have been stolen by them.

The $5.99 purchase was the first and only time I have ever bought something from Newegg. It seems an unlikely coincidence that someone would have stolen my card number and used it to purchase an item from Newegg 10 days before mine unless it was someone at Newegg. I'm sure there are ways to change a purchase date if you work for the company, I worked in marketing and can assure you this is the case.

I have no way to prove this happened but I would not do business with this company, just in case.