If you want to refund on PayPal
"Dear IWantCheats (or w/e site),
after carefully reviewing your VIP cheat, which you clearly claim to be battleye undetected, I came to the conclusion that it is not. I have been banned on the forum for posting that this cheat was detected. If you do not refund the full amount I paid for this subscription, I will initiate legal action against your company.
Sincerely,
your name"
or sth like that, I am no legal expert at all.
They most likely wont even have the balls to comment on that so you will win that argument easily.