Without a phone for a month... CAN SOMEONE PLEASE HELP ME?!

I got a new iPhone 7 Plus from Cell C in October as per my contract. In December the phone would no longer charge, no matter which charger or power outlet I used. I took it to Cell C Mall @ Reds, where I was advised to hand in the phone as they would send it in for repairs. About 2 weeks later I was notified that my phone had been fixed and I went to collect it. As soon as I got home and tried to charge it, it still wouldn't charge.

I went back and they sent it in for the second time. After another 2 weeks I was once again notified that the phone was ready for collection. However, having burned my fingers once before, I phoned the store beforehand to ask them whether they had made sure it was fixed before returning it to me this time. A technician called me and said that, upon testing it, they discovered that the phone still was not charging. My question at this stage is why was I notified it was ready then? Did any technician even bother to test it? I asked the technician what the process would be now and he simply told me that he didn't know and that he couldn't advise me on what to do- that maybe i should rather take the phone to an iStore. My second question at this stage is "is the technician admitting that Cell-C's whole technical team is less competent than that of the iStore?"

Eventually I got so frustrated that I phoned client care (140) and went through to a lovely lady on the technical side. She said that my phone had, on neither of the two occasions, even undergone a glimpse of reparations, as "Find my iPhone" was turned on, making it impossible for the technicians to get into my phone, and that reparations could only start once it had been turned off. Please bear in mind that a month has gone by, nothing has happened, and no one has notified me of the one thing I could do to make something happen. To make matters worse, after logging into another device, I saw that Find My iPhone has been off the whole time.

I am honestly so frustrated I could cry and if I don't get assistance soon I am going to do everything in my power to get out of this contract- because clearly Cell C's side of the bargain has not been upheld whatsoever.