Open a dispute in PayPal & call them to reverse this payment.
Although subject line that you put in your payment may result in getting your account limited as PayPal does not like exchanging them for any other currency
It's going to be almost impossible to perform a chargeback, and win the case since PayPal does not support digital goods unless its downloadable content.
I've lost money to PayPal scammers too, tried to get it back and failed
