I don't mean this in a rude way, but you have been a member of ebay for many years now and you've sold hundreds of items.

You are so, so lucky you have got this far without ever having struck trouble before.

If you want to keep selling on ebay and it looks as if you do, then the best thing you could do is make yourself a cuppa, sit down and have a look at the links other members have posted here. Take the time to read them carefully and follow through with your blocks. And if anyone doesn't pay in future, follow up by giving that buyer a strike for non payment. Never just a neg feedback with a green dot!

You'll need maybe 30-45 minutes to dedicate to sorting it out and discovering your options but it will be time well spent. It will make your life easier.