Falls marketing and poor business practices

Don't believe what they are saying when giving you free bet amount I was given R200 free play amount and played with it and top it with my R300 While playing it was R900 I made a R300 widrawal to my suprise top up 200 plus R400 that I won Sunbet took it all this is not a fair play and when I call to find out they talk about rules that where not clear to me and is not the first time they did this to me it shows that they want to take only from me but don't want me to win this is falls marketing be careful with this people