Mix up with a shoe I bought

I bought a shoe a week ago and to my surprise when I got home the box had the right type of shoe but different sizes. I called Thato at the Sandton branch to query it and explained I needed that shoe urgently. He was adamant that if I go to Southgate I would be able to rectify the problem but even they couldn't help. Which meant I had to make another trip to Jabulani mall Before I could sort it out. I hadn't taken an alternative shoe when I left the house because the purpose of making that call to Thato in Sandton was to get confirmation that one trip was enough to solve my dilemma. Needless to say I didn't make it to my meeting in time, calling this terrible customer service is an insult to people who give terrible service.