Bad service. Shoe sole peels off from the first time I wore it.

I bought sneakers from Cross Trainer at Dwarsloop Mall. The very first time I wore them the sole of the right shoe started peeling off. Luckily I was on my way there and I showed the sales person by the name of Nyiko and he is the one who sold me the shoe. It was my first time wearing them and then he took pictures and said he will file a complaint. I have been making follow ups for the past 3 months but still I'm told it's a long process. I was not given a case number or anything.