Sounds like you found out the hard way that the majority of Playtechs are dodgy at best, rogue at worst...
But do not despair - there are a few very reputable ones!
CasinoMeister Accredited: Better Casino, BetFred, Bet365, CentreBet, Omni, CS Casino & Tila Casino.
KasinoKing Recommended: Better Casino, BetFred, Bet365, CentreBet, Tote Sport & Grosvenor.
(Also, the William Hill group is expected to be recommended soon)
You shouldn't have any problems getting paid by any of those - if you do, you know where to come!
PS: Welcome to the forum!