Once you have placed your bet and its acceptance has been confirmed, you cannot cancel it. That's why you should always make sure you have the correct bet before submitting it. In some cases you may be allowed to Cash Out your bet before the market goes live.

All you have to do in this case is go to the cashier and the bets will be cancelled with no hassle. However, there are exceptions, such as if you bet on an event that is cancelled or postponed more than 3 days after the scheduled date. In this case the single bet will be cancelled by the bookmaker automatically.