Incorrect payment taken from my bank card

I went to Edgars Tygervalley on Monday July 27 to purchase two R400 gift vouchers. I was helped by Nandipha Folomame. After swiping my bank card for the first R400 charge, she told me the transaction didnot go through. I told her that the money went off my account already. She told me it would be reversed within 24 hrs, took my details and the receipt and promised to give me a call on Tuesday. Then we proceeded with the purchase of two R400 gift vouchers and I left the store. Tuesday came and went, no call from Edgars. Wednesday morning I started calling Edgars Tygervalley and eventually after numerous calls, a lady who said she was Azziz or Aziza answered my call, took my details, asked me to send my bank statement showing the three charges on my account. She promised to call me back as soon as ahe gets my email address. I emailed my bank statement to *** as she instructed and waited for her call. It is now two days later and five days since the incorrect purchase on my account, I still have not heard from anyone from Edgars. I have been calling since 9:30 again this morning and there is still no one to take my call. I am calling *** and no response. I re emailed my bank statement, no response, not even acknowledgement of my email. I am tired of this pathetic way that I am being treated by this store. I have been way too patient with them but they treat me like thrash.