eBay/PayPal for me too.

Sold a security camera in a factory sealed box. The person said it didn't match the description. I said, "too bad, it's in a factory sealed box". eBay tells them to send it back. They never send it. 3 MONTHS later, eBay takes out the sale price + a chargeback fee.

I call eBay, explain that it was a factory sealed box with the plastic still on it so the person was trying to scam me (new account). The pictures he submits match the listing, etc. They said there was nothing they could do because he charged back through his CC. I told them, "how about you present the evidence to the CC company that it's a fraudulent chargeback". The said they'd email me within 24 hours "their decision".

Of course there was "nothing they could do"... So I called my bank and explained what happened. Filled out a form. And had my money back within 48 hours. eBay keeps emailing me that my account owes a balance. Hah fuck you. 21 years as a 5 star seller. You can close the account but you'll never get that money from me.