Alright so an update on the situation:
I called Paypal today and asked them about the claim I submitted and asked the lady on the line if the artist was violating Paypal's TOS (i.e charging paypal fees). She said it wasn't as they were being charged with the fees anyways, and while she agreed it was morally wrong and scummy of them to do, she couldn't do anything as the artist by Paypal terms wasn't doing anything violating on Paypal's platform.
She told me just wait out the dispute for a response and couldn't do anything yet. So yeah unfortunately I couldn't get my claim resolved over the phone unfortunately 😕