Refund rejected for an expired product

I purchased a Evox L-Glutamine from Takealot and it was expired. I did not realize it was expired until I consumed it and had a bad reaction. I logged a return expecting atleast some form of acknowledgement of the problem but I did not get anything back and had to chase this up under my online profile. Only then I realized the return was rejected and it was rejected without reason. The concern here is that something serious could have resulted from this and not just a bad reaction. I'm just not sure how Takealot ignores such, even if I got a note saying they will take this up with their supplier but cannot refund me I would have taken that but a rejection with no notification and the call centre agents cannot even tell me why it was rejected. Shocking!!