No usb cable no replacement cellphone says T

Takealot will not give me a replacement device or credit my account for a cellphone I bought through them because I threw out a cheap usb cable that came with it because it broke and refused to charge my device within the first two weeks. Now +-5 months after getting the phone it refuses to charge or turn on at all. Takealot says the manufacturer will not accept anything less than everything, and therefore Takealot will not accept that a faulty usb cable was chucked. So their response is they won't do anything because I didn't give them a cable, and they say the return is concluded.