Lack of service and communication

I bought a SSD from Takealot and it failed so I requested a replacement. Befoer they collected I decided to rather upgrade the SSD so I asked for a credit instead. On the 29th I recd an email to advise that a credit would be passed. Today I recd an sms advising that my replacemtn is on tots way ! There is obviously a lack of communication in Takealot, and worst of all there is nobody you can speak to, they dont answer emails and nowhere I can complain. Totally fed up with Takealot wasting my time. I could have driven down to the shop and bought a new SSD over a week ago