Bad service!

I purchased a pair of Adidas Tekkies Size 5 from Totalsports in Zevenwacht Mall Western Cape on 02 September 2017 for my son. They were however too small. I attempted to exchange them on 10 September 2017. I unfortunately lost the slip, but purchased the shoes on account, an account by the way, I have had for close to 20 years, the sales person told me she can't do the exchange because there is no manager on duty, which I found unacceptable in the first place. She took the shoes and the contact details and told me the manager will phone me the following day Monday 11 September 2017. By 15:00 I still hadn't heard anything so I returned to the store to find out what was going on. Just to be accused that the shoes had been worn. They weren't "worn" my son fitted them, walked around the house, told me they hurt him, took them off, placed them back in the box. I left the store once again with the shoes and phoned customer care to explain my situation. I was told the area manager would contact me within 3 days. I am still waiting ........................