Extreme poor service

I went to Incredible Connections in the Vaal Mall, my father and I went to buy him a laptop, as I am about to pay I asked the cashier if I could swipe my ebucks card for points. She then mistakenly put the transaction through on my ebucks card. I requested her to reverse or cancel the transaction, she told me that she could provide me with a gift card; I said no, I need it to be reversed as it should be paid with my fathers card. The cashier told me that she cant, I then called FNB and they told me that they should cancel the transaction. They then put the transaction through with my fathers card and asked if I could come back later as the manager is not in to fix my ebucks account. I returned later that day and they said that they would call me in the week and reverse the transaction. I received a call from the requesting that I should come again with my card so that they could debit the money back, when I arrived they asked if I could return back another day as the manager is not in. I then went the Friday and they took my card and said that they debited the money back. A week later I requested a detailed balance from FNB for my ebucks account just to realize that they have not paid the money back but accidentally deducted it again, I am now R11000.00 in the red thanks to them. I called them again today about the problem, and they said that unfortunately the manager is on leave! I am so frustrated with the incompetence of the staff and manager at Incredible Connections. If I had known what a disaster it would be I would have never bought the laptop there in the first place!!!