Bet Payout Help

Hi could any one advise on the following. I placed a bet on the dogs on a slip that i had already written 7.06 Yarmouth on but decided not to bet that race. By mistake i still used the slip for the sunderland 19.11 race and bet on trap 5 taking the price of 2 to 1 so was obvious which race was intended. The bet was struck at 19.11 so obviously it was not for the earlier yarmouth race. As the dog won is my bet paid out or is the bet void and money refunded. Thanks for the anticipated advise.