Return order RRN-DC5B-C53F

I have been a loyal customer at takealot, recently my experience with takealot had taken away the trust I had for them. I have purchased the heater order ***3 that was delivered not working on the 16/05/2020 and it was replaced on the other one that is not working on the 18 /05/2020, then I made a return and tell them to credit the account. After several calls and emails to check why the heater was not collected on the 19th on the system, it was then collected on the 20th May 2020. Till today I don't know what's happening. No one is replying to my emails, as now when you try to call due to lock down they are call number is not working. I have even try to spoke with Rene Cloete to refer me to complaints department on the 20th who told me that at thecall Centre they are there one responsible to resolve the issue. I thier service is pathetic, till today there is no feedback and I am staying without heater in this cold weather. For now what I need is my refund, I don't expect better service from them at all.