There's more to it than you're telling us - ebay doesn't suspend accounts (or send debt letters) just because a card has expired. You must have ignored plenty of reminders from them to pay...?

Ring and talk to them.

I have sold 10 items on eBay. I all got brilliant feedbacks from all 10 buyers so that's a good start. When I rang them up yesterday to ask if I could increase my selling limit they told me I shouldn't have an eBay account to sell as I was suspended. I have sold on ebay plenty of times but when they tried to take money for their fees my card registered with eBay had expired so I couldn't pay for them. Next thing I knew I had a debt letter for about ￡60 what I had then emidiatly paid. Now they have indefinitely suspended me from selling? Anyone know what I can do?