Mr Price Bloed Mall Double Payment

Yesterday I bought a cople of pants at MR Price Bloed Mall. Due to a network issues they used another payment method. I paid using that machine and the lady operating the machine left that "APPROVED Payment' screen, and resultantly couldn't print the slip. I was made to go use the card mechine. Today I realised that My account was debitd TWICE!....what makes matters worse is that the amount was for something important as a student. Now I am broke...don't even know how I will survive the month