account billed 3 times but only swiped twice

I bought items by The store in tygervalley last week. My card declined, so they swiped again and it went through. Now today I checked my bank account on my app and it went through 3 times. Now I called this store and this guy is telling me there is nothing he can do till I bring my bank statement. I don't have time to travel up and down seeing I don't have a car and the banks are closed today now I don't have enough money in my account for my debit orders including my medical aid. I have a sick child who needs that to be paid. Its almost R1800 that was taken. Everytime I buy things at this retail store the is a problem with my card. My card don't give problems anywhere else. Then this Andre say it's not the first time it's been happening to ppl then that means the system is messed up, then he says it's a new system, it's a connection problem. Then it means all the Mr price stores needs to get there connection problem sorted out. Cos my card declines. By most stores. This is utter nonsense. Plus don't your bookkeepers see there is money over and look where it came from. I mean really. how many people have u guys ****** that don't check there accounts