Deceptive charge to my PayPal

I signed up for the free trial and MuseScore charged me. I received an email from them that says they tried to refund me the money but could not because of the PayPal dispute. PayPal said there was no attempt made to refund the money from MuseScore. Someone is giving me misinformation. PayPal said a dispute does not keep a refund from being processed. It sounds like MuseScore is trying to keep my money that they deceptively took. MuseScore support is no longer responding to my emails and conveniently does not have chat or phone support. Any advice?