Siyanda Goba from Pepcell has disgusting service

I would like to lodge a complaint against a pep employee at one of your branches. Today I went through to Kwamnyandu mall in Umlazi Durban in KwaZulu natal, to buy a C-Type cable which I pointed to. Once the teller had rang up the item, I realized that it was a brand I’ve never seen before in the store, not the brand I always buy. I immediately told the teller that’s not the brand I want. He then said to make point blank that it was not his problem because he has already rung it up. I asked him to please change it to the one I had initially pointed to. He then started raising his voice at me in front of everyone in the story saying that the store policy doesn’t allow them to exchange goods if there is no fault with the product. At this point I had not even touched the product it was still with him in his hand. He continued to shout and speak to me a very impolite manner for a good 20 mins. I then asked him why he is insisting on selling me a product I do not want. He didn’t even bother to ask his manager to intervene until I asked him what my options were. At this point I was already on the line calling an agent from the CPA. He then walked away from me and returned 3mins later, stood next to his till and said nothing. I asked him again what my options were, then he said he was waiting for his manager, in a very rude way. Once the manager arrived, she asked what the issue was, and I explained to her. She then asked another store employee to get the cable, she rang it up and gave it to me. No apology whatsoever was given. Even this store manager had attitude as well. The manager’s name was Thobeka and the employee is Siyanda Goba.