Worst Store Ever-Waiting two months on refund

I am writing to make a formal complaint with regards to the disappointing service received after a damaged fridge was delivered to my place. On December 20th 2017 I bought a fridge at Hirsch’s in Somerset West for R 8750 with R850 for extended waranty. During the inspection at delivery, the fridge turned out to have three dents. I launched a complained and was informed that the sales representative should have pointed this out to me during the sales, which did not happen. Following some discussions I was informed that I could return the fridge and get the purchase price back. I got my refund of R8750 on 24 January and still waiting on my R850.There has been no feedback from salesman or manager.Beyond Poor.