Out of words for a terrible customer service

I bought size 6 female Adidas tekies at Totalsports Hammarsdale on 28/03/2018 on a 33% discount and on 30/03/2018 I tried to exchange them for a size 7 because they were too small, to my surprise I was told that they only could be exchanged for a normal price because the special was over and I refused to do that, I drove from Hammarsdale to PMB Edendale mall and totalsports PMB and no size 7 was available, drove back to totalsport Watercrest mall where I was eventually assisted, that's 138 Km between the 3 totalsports shops. I phoned totalsports customer care to complain the very same day and I was told they would attend to it only on Tuesday 04.04.18.

On 04.04.18 indeed I received a call from the same guy from Hammarsdale whom I believe is a store manager and he said if I haven't been able to exchange those tekies maybe I should come back to his shop and we would make a plan, and that infuriated me. No apologies I've recieved from the store no remorse for bad customer service was shown, nothing!!!. This is terrible and pathetic for a store as big as totalsports. I'm settling and closing totalsports account, as a customer I can't be treated this bad, it's disturbing.