Repair /exchange declined

I bought a Speedtrack at Cape Union Mart while i was working for the Company and i had a problem with the stichings of the shoes while i was still working for them but i have never got a chance to book it in for repairs since i was using it for work.The shoe had been in its box ever since i stopped working for them and last month decided to return for them to repair or exchange since i know about their fair wear and tear and they didnt not accept it both Canal Walk branch and Cwac, and i know for a fact if it was a deferent customer or someone they dont know they would have done something about the shoe.