over R10k deposited and nothing to show for it

https://www.playtsogo.co.za/

over R10k deposited and not a single win large enough to withdraw...i tried many games at different bets..all the same! rigged! i play the same value bets on the same slots on other online sites and i win regularly on all of them...over R10k with no return at all means that something is not right with the setup of the games..i wont go back at all if this carries on