Hollywoodbets ********** activity

I placed a Horse bet on my hollywoodbets account and it showed that it WON on my account they gave me R375 winnings, I than kept on playing until I lost all that amount from other bets and the next morning when I tryed logging in my account and load voucher I found it on minus -R375 it's the same horse they gave me the winnings from they said it lost and when I phoned them to ask why top up my account if their are not sure of the results the lady told me I need to pay Hollywoodbets R375, I've never heard such nonsense in my life so from today i will never ever use my account again since I can't afford such money to be credited to my account, I advice people not to use hollywoodbets or open accounts with them.