YukonGold, how do I get rid of that bonus

[rch6657]

I am new here I have a question I am playing on Yukon gold I deposited 24.00 Canadian and received 6.00 bonus I won money and was up to 454 they say I owed 22.50. Because of that bonus I played some more and now they say I owe 12.30 . My question is how do I get rid of that bonus I’ve tried playing I lost some and won some but the bonus never decreases I don’t know what to do I don’t want to lose my winnings to pay back 12.30 please help me I’m so angry and frustrated