Faulty card machines have not reversed my payment

I went to Edgars Tygervalley 22/12/2015 to pay my account, after swiping my debit card the consultant finally looked at the card and said they are having trouble with ABSA bank cards. The payment declined and the consultant gave my card back but no decline slip. I have been calling, emailing and trying to escalate this matter but neither the store nor the head office are making any effort to reverse the payment which is laying pending on my account, they keep asking me for a statement but i have already explained that a pending amount does not reflect on my statement and i have sent a screen shot of the pending on my internet banking account.