SHOPRITE-KOKSTAD - CHARGED THREE TIMES FOR THE SAME GOODS

I went to SHOPRITE in Kokstad and bought some goods and when I paid at the till with my debit card, they actually deducted three times from my bank as I was paying with my debit card. I got three (3) sms notification to confirm that money has gone out of my account. The till attendant told me the money will be reversed in a few minutes, so we waited. After about 15 minutes the money was still not reversed and then I asked for the manager. What she told me gave me no hope that I will ever get my money back. She asked me to go to the bank and get a bank statement, even though I showed her the sms messages on the phone. I waited for about an hour arguing with this manager person who then left and set at her computer because she could not help me. Eventually I had to leave as I had to drive another 150km back home without the goods and the money that went off my account for the same goods. As i write this, the money has still not been reversed. Very frustrated as it is now. What **** is this that SHOPRITE is playing? Now must I drive back another 150km to find out when am i going to get my money? And then go to the bank and ask for a statement and pay for it? More expenses? But really, was it my fault that their machines had a problem? Somebody please make me understand.