Unprofessional conduct

Today the 13th July 2017, my wife went into one of your stores in Polokwane to buy me a cell phone as a surprise, this was done at 14:38, when she got home to present the phone I was not happy with this phone as it is small , so I told her that we should return it and take a bigger one but she told me that the cashier Margaret told her that there was no turns or exchanges one she leaves the store with the phone that’s it she cannot return it for exchange or refund, I told my wife that what this cashier told her is false and ********. When then drove to the local consumer affairs offices and explained this issue and we were told that the shop should refund us or allow us to exchange the phone for what we want, I mean the phone is hardly 3 hours in our position, we were told that if the shop refuses to refund or exchange the phone the refusal should be in written by the store manager. I when to the store as around 16:38 and spoke to Phonia and Maggie, they told me that they would to refund me or exchange my phone as the company policy does not allow them to do so, I asked for that company policy but they refused to give it to me, I asked to speak to the manger and was told he/she was on leave, and that Maggie was in charge of the store, I asked her to give me documentary proof that the store does not refund or exchange so I can take it to the the consumer affairs office but she refused and said I should speak to the area manager, I asked for his or her name and email address so I can communicate but she refused saying I should call the customer services, clearly I was not getting any help and yet a phone was paid R599, but nobody cares, Maggie went to an office and I suppose called this area manager who also said I should just leave and that I was not going to get any help.

Please assist me with this matter as how this staff members are treating me as a paying customer is very wrong and ********, this phone is still new and I am not happy with it, it does not meet my needs and I have a right to exchange or refund.