New Nokia 6 Faulty

A week ago my son had arranged with Anele (Manager) @ Cell C Soneike, Kuilsriver to keep him a Huawei Cell phone on his return from London. On arriving at Soneike Cell C on 20 Feb 2018 @ 17:30, Anele (manager) was not there and had not arranged with the other staff members that my son was collecting this phone. They however they suggested that he purchase a Nokia 6, which was in stock. My son then paid cash for this phone and we left. The SIM card was inserted and the phone kept on rebooting. My son returned to Cell C Soneike on the morning of 21 Feb 2018 and was told to book the phone in that it be sent away for an assessment. This is utter nonsense at the phone is brand new and paid for. Cell C should have returned his money of issued him with another phone. Cell C does not put their customers first at all. And we are utterly disgusted in our dealings with Cell C.