No one can give me answers

On December 24th 2018 I went to Edgars Clearwater mall. I wanted to purchase 2 items on my account. The Cassier Thato Pooe ********** told me I had to pay R850 to make a purchase for my goods that was approximately R2500 after paying with my card it immediately put my Edgars card in an advance of R1694.45 Then only to find out the card is blocked. After speaking to the Manager at Clearwater mall Kgotso Ntja ( customer service) I still had no solution to my current issue. On Wednesday the 27th I called head office, they told me go back to Clearwater to get my refund of R1694.45 in cash, I went there and after arguing for about 30 minutes with Kgotso Ntja I still had no solution as to what was going and how I could get my refund, they also gave no explanation as to why my account had been blocked. No one can give an F&*%*^% answer. All I want is my money back from Edgars.