My account has been mistakingly suspended, please help

Recently I purchased a digital item on Gameflip, I tried requesting a refund (i didn’t receive the item) and an error popped up saying account suspended. I don’t know what to do about it and gameflip hasn’t responded. My invite code is KMZR4Q

Your account was suspendes because you charged back a purchase you made. Thus a suspension was placed within your account. I can only remove this suspension if you cancel this charge back.