Terrible service from Identity nelspruit CBD

I bought sandals, I fitted one shoe it was ok . Then I bought the shoe, after some few days I wanted to wear the shoes as I thought they were ok only to find that the left shoe was a bit tight so I went back to the store I explained my story that I would like to exchange due to the one shoe is not comfortable. They asked for the slip, I told them that I threw it away as I thought the shoe was ok, then the manager told me that they cannot take back the shoes because there is no slip and I had removed the price tag, I said I did all that because I thought the shoes were ok and I was ready to wear them I had no idea that I'll have a problem with the other shoe. She then said the shoes have been worn I explained to her that I didn't I'm a size 40 if I wear a shoe even for five minutes the shoe won't remain the same but she was just rude then she ended up saying they need to take the shoes for quality check then I said it's fine . But i phoned their head office to lay a complain about the poor service i received from the store manager but they were not even willing to help. All the happened in December now it is March since they took my shoe for quality check its not back and no one is phoning me for an update nothing. So I don't know if it is my loss or what. I just hate identity as a whole because even their head office is useless they do not value their customers