I cannot refund money because PayPal do not want to get my account on negative balance when I want , they will when they want and that's exact moment when OP get his money back. Anymore discussion about that is irrevelant.
See that's the important part, any problem you have with paypal is your problem. You were sent the money, you refuse to send the bitcoins, and cannot refund the money (because by your own admission, you spent it). That makes you a scammer. That is not irrelevant, it's the exactly what the topic is about which reads "dareq=scammer". Get a clue.