Xfinity mobile is the worst - double charges

So, on June 28, Xfinity.com scammed me with $758.86, that was paid by my PayPal card as $682.10  one payment (Transaction ID
3GG286751B2804347) and $76.76 another payment (Transaction ID
2AP71218NP4777318).. (you can check it on my PayPal transactions), I paid it because they forced me to do it or send it to collecters. I filed a PayPal case after that and they add the amount back to my account on xfinity.com even the case wasn't resolved yet!! 

The amount they added back is $682.10 which I opened a PayPal case for + $34.24 a balance they added from nowhere too = $716.34 the amount they charged me (Transaction ID 30U710571G8689843).

As you see in the picture $682.10 shows once but charged me twice on PayPal. They added it back because I opened a case on PayPal resolution center

Now I canceled my PayPal card in hope to stop that scam. Please help me out to get a refund.

Ameer Ali