Istore ****** me

This Mark's the very last month of a 24 month contract which I took with istore at langa mall nelspruit, a iPhone 6s plus which I only got to use for less than 3 month. On the day of purchase the device looked and seemed ok, my husband and I thought 2 devices on that very same day on contract. We went back home the device only worked for 3 weeks and started overheating, I was outside the province by then for work , I tried to call them but they dont have a straight line, I managed to send somone to get a cellphone number of the consultants who was assisting us on the contract, I then gave her a call and explained what's happening. She said to me when I come back I must please bring the device and she will explain to the manager and they will have it booked in. I came back to nelspruit after 4 months and when I got there i asked for her and unfortunately they told me she was involved in a car accident and she in ICU. I then explained to them to what had happened and tbe technician told me they will book it in but I will pay +- R6000 for it to be fixed, mind you the phone was still under warranty. I then told them I will rather wait until the lady who gave us the devices come back from hospital which I was hoping it will be soon. I then bought myself another devi e ti use for time being. I waited and waited while checking if the lady was back or not. Then January this year 2019 I went to the store and there she was. I told her that I came and what had happened and the sad part is vodacom is taking money every month on a device I'm not even using. She spoke called the manger and explained the situation, the manager agreed to help me and they took in my device for the very first time and never told me about any fees that I might have to pay. After 2 weeks I received a phone call from a lady In joburg were my phone was taken to telling me that i must pay R6700 for my device, she asked me if i accepted the qoute or not and i said no i dont accept it. They kept of send me emails about the qoutes and the last email they told me they will be sending the device back to the store. As I explained I'm working outside the province , few weeks after that I came back and went to the istore to ask them what's happening, the manger acted as if he doest know me and told me he works with different people every day and doesnt remember my story, I called the consultant who was assisted me to please remind them as she knows everything that happened from day 1, they called her in the back office and God knows I dont know what they said to her because after that she came out and told me she cant help me further than this. They forced me to take my device as broken as is and I refused. I left it there with them. I feel ****** from istore and vodacom because I paid a 24month contract which I never even used. My contact number is ***