Just writing you to tell you about an interesting experience I had over the past probably about a months time.
I had been selling WP 4 Beginners on my own just through digiresults and my site.
Any way, I received a typical message from paypal saying that the purchase was an unauthorized transaction. I was not satisfied with that because the buyer did not even come to me for support.
Any way, Paypal said i had 10 days from their initial hold to make my case. So on the 10th day I simply posted a note saying that the buyer did not even ask for any support, did not schedule her free consultation.
And a few days later(today) I received a message from paypal, I looked in my account and sure enough! There were the funds! They reversed their reversal!
Just saying dont give up... You could be right on the edge of a success and not even know it.