Bad service

I bought 2 school bags on the 14/5/2015 and had a problem with one of the bags on the 15/5/2015 then returned the bag on the 16/5/2015 to Jet Mart in Brakpan but the manager there refused to assist me. I had the slip and the bag which the zip went off the rail. I asked for him to show me under t&c where it states he can't assist. But still he refused. I have written a complaint to the head office but still no assistance. I am left with a new bag my child can't carry to school, so he has to carry an old torn bag which is difficult to carry as he comes home with a painful back due to this. It's not the first time I' ve had bad service from that store. But this time it's worse where its affecting my child physically and us all emotionally. When I complained on their website I didn't even get a reference number nor an acknowledgement of my email. This is very urgent please assist. <br>