Bad Service

I bought an airfryer on takealot and when the airfryer arrived on the 18th Nov, it was of a very bad quality so I logged it immediately for return. I received confirmation that it will be collected on Mon 21st Nov. Monday morning it was collected and Wed 23rd Nov my Takealot account was credited with R799 and I requested a refund to my bank account and it was approved the same day. The confirmation that I received said that the refund will take 3-5 working days. I accepted that. Yesterday was the 6th business day and I went on their website and requested a consultant contact me and 24 hours later, nobody has called me and I have not received any credit. I don't know what to do now as I have followed all the steps that I was supposed to. Please contact me urgently on ***