takealot does not allow warranty returns

I am very upset with takealot and the way my order and return was handled. I bought a R3000,00 chair from takealot 5 months ago. At 5 months, 3 of the legs of the chair all snapped at once. we returned the chair under the 6 month warranty. This return was rejected by takealot, stating it was not a warranty issue. I phoned takealot helpline and spoke to a rep, informing them that it was not wear and tear, but all 3 legs broke at the same time, which is most definitely a factory default. The Rep agreed that this is most definitely a warranty problem and she would get her supervisor to approve the return once they found the chair, which had gotten lost in the returns process. a week later they found the chair and returned it to me with an email stating this was rejected by the supervisor and is not a warranty issue. This is *******, as how can all 3 legs break at the same time as a wear and tear issue? Takealot is now just replying to my emails with a copy and paste saying there is nothing they can or will do. This is unacceptable, this chair cost a lot of money, and I bought it knowing it had a warranty, the fact that this warranty is not being upheld is disgusting. I feel like takealot is not upholding their warranty. What is my legal recourse to fix this? Is their a warranty ombudsman i can go to? How do I get this sorted?