Store credit used on an order CANCELLED by Superbalist.com!

Hi I had R433 store credit and I tried to use it on Black Friday but the order got cancelled as the system crashed and now I’m trying to buy with the same credit but it says my store credit amount is 30 cents. I WANT TO BUY SNEAKERS THAT ARE 40% OFF NOW AND I WONT BE ABLE TO!!! -_-