Having said that, if a vendor sends me an invoice from PayPal allowing me to pay using a credit card, I will complete that transaction. Using a credit card , you can pursue a Dispute/Claim with PayPal, or you can contact your credit card company and file a chargeback. I'd opt for contacting my credit card issuer.
Unless PayPal has closed my account due to inactivity, I still have an account with them but I've removed all CC and bank information from my PayPal account profile.