I just wanted a spice grinder that works😕

I am very disappointed in the service received from takealot regarding a replacement for product that I returned. I bought a coffee grinder from take alot in December, which just stopped working after 5 uses. Takealot accepted the return of the product and told me that I would be notified of when I will receive a new one. I waited two weeks with no reply. I then noticed that I had been credited for the item-again with no formal communication from the company. Eventually after filing a complaint about the service did I receive an email stating that the product is not available which was why a refund was issued. I have just been on to the takealot app to try to purchase another spice grinder, only to find the exact same product advertised for sale, only this time it's double the price! So why was my product not replaced in the first place? Takealot, I want answers!