I am so sorry this happened to you. I never keep a dime in my Paypal account. I opened a checking account specifically for my Paypal account. Theres zero in there, too. So If I get money in my Paypal account, I transfer immediately to the attached checking account, then transfer again into my regular account. If I want to pay for something, I transfer money into my checking account attached to Paypal, then transfer to Paypal. Its a pain in the patoot, but I feel its the only way to keep it safe. I can't believe Paypal cant reimburse you, surely they can see it was a scam. Good luck.
If you do it this way, make sure you dont have overdraft protection, so hackers can't max your credit card.