Bad service and Theft

I'm utterly disgusted by the service I have received from Foschini after having an account with them for more than 10 years, I went to East Rand Mall on the 26th of Oct and made a purchase of R560 and forgot my card, Got a call on my way home to advice e that I had forgotten the card. I couldn't go back and had forgot to fetch it. On the 18th of Dec I went to the store to fetch my card and make manual payment as I usually make an EFT payment I got the lady who searched for my card and told me she couldn't find it, and that i need to make a new one. I did not have my ID card at the time, I came back the following day on the 19th of Dec. I did a new card and I knew my balance to be one thousand and a couple of rand, To my surprise I was supposed to pay R1060 which did not make sense. I asked the lady why do I need to pay so much money and she told me that because my balance was R6000 something and I told her that I have not used my account and told her what had happened to my card. She told me the purchases that were made with my account which I did not know of. She advised me not to worry it will be sorted I just need to fill in the dispute form do an affidavit and bring the certified copy of my ID. I did everything and it was "sent through to their forensic dep" on the 21st of December. I have been waiting for the feedback instead i have been getting sms's that i need to pay R1080 which I cannot afford, I paid R700 on the 7th of January and kept on getting sms's notify me that my account is still in arrears and that I should pay R1460. I called their forensics department today on the 15th of February and I was advised no ***** case was filed under my account.