Worst experience ever

The worst experience especially with the manager from The Glen, I got a phone on contract however it was giving me issues and I had returned it within 7 days and he told me to go back with it as it’s the long weekend. I was well within my rights of getting a new phone since that one I got had technical issues and when another consultant checked it out he had said the device is faulty and I should return it where I got it, I did that but I was told about the long weekend and that I should call the customer care line to cancel the contract. Within a period of a month the device went in for repairs and came back but it’s still not working, while they said the Area Manager refused to exchange the device and give me a new on even though they can see that it’s faulty and clearly an OBF. It’s gone in for repairs again and the manager was avoiding me when I was there this past Sunday.