Do not buy a product at hi-fi corp

I had the misfortune of having to return a product back to the N1 City branch in Cape Town. I bought the product not knowing if it will suit my needs and I informed the cashier I’ll set it up and if it doesn’t work for me, I’ll return it the next day. Which is what happened. She explained there’ll be a 15% handling fee which I was happy with. What I was not happy with was the fact that I had to provide my ID number when returning goods. With today’s identity *****, I refused to give my ID. They said they couldn’t then refund me and I left the store without my refund, less 15%.