Poor and disgraceful service if selling refurbished iPhones and claim that they are new and refuse to refund customers

I’m sick and tired of the service that I got from Makro Amanzimtoti Durban, the staff and the store manager. Bought an iphone with Vodacom contract from Makro, almost 18 months ago, had to take it back after 2 months because it wasn’t working, they took it for repairs but end up replacing it with another one and they claimed that it’s new, and after one month it was not working. They took it for repairs now my argument is that why in the first place they sold me refurbished iphone and I paid for the new contract even the subsequent ones were not new? Now they are forcing me to go and take another second hand phone, I’m refusing I need the credit note so that I can go somewhere else to buy a new phone. All this time I’m paying every month for the phone and contract that I don’t have. Makro is forcing me and I refuse to be bul**** by their staff with a bad attitude to tell me that I need to take that fourth refurbished phone. Even today, the staff from the Returns Department was still phoning and forcing me to come and take the refurbished phone for the fourth time after I told them several times that I need my refund now as a customer I have the right to get the service that I’m paying for.