********* business practice

Good day

I hope you are well and that you can help me as I do not know what to do anymore.

I bought a television from Hisense through takealot and it is still under warranty. I logged a fault with Hisense and they confirmed that the unit can not be fixed. They took the television with them, confirming that I will be credited with the purchase amount.

After collecting the unit they now are refusing to confirm that they have collected it and takealot can not process the credit until Hisense confirms collection. What recourse do I have against a large organisation like Hisense. The have now essentially ****** the unit from me and I refusing to provide any feedback. Reference number - ***.

Please can someone help me with any information on where I can report this. Or should I open a police report?