Too big to care (or honour warranties / offer compensation for VERY POOR service)

After over a decade of shopping with Takealot.com for work and home, my recent experience trying to get a warranty recognized has put me off for life. It took months and dozens of email, having to explain myself over and over and over again to multiple people to secure a basic refund on a product that, according to the manufacturer (who i has to contact directly), they shouldn't have sold me in the first place. No attempt to escalate internally, despite this being requested and promised repeatedly, and no offer of compensation after such poor customer service, and cost to me in terms of time and money. I can't risk going through that again, not to mention expose myself to the possibility that they may not honour warranties on items they sold directly (not a third-party seller). Lots of boiler plate promises and apologies but no actual customer service.