They owed me and now I owe them. Bad attitude.

Early last year(2014) Edcon contacted me through a call centre about of a credit balance in my Edgars account. I should go to my nearest branch and get the money in the form of a voucher, as the account is now closed.<br> I went to Edgars Clearwater and asked for the voucher. The staff took hours to check the details of this. They claimed that they couldn't give me the voucher. I should buy something! <br> My daughter chose items to a greater value and we would pay the difference. Many hours later, various staff checking things again on their system, phoning a pile of numbers, I was told that I couldn't buy anything either, as my account wasn't active! <br> By now I was furious and asked a phone number to sort this myself. I was given a phone number which turned out to be the switchboard and that young lady didn't know how to help. Neither did their website.<br> After speaking to an army of people and many, many e-mails with many, many different persons, proving I wasn't a ******** and that I was who I said I was, I was refunded the amount into my account. <br> Then some brain surgeon put R1050 into my account from the 'closed' account. Now they want to sue me via sms. Again, no contact details.