Poor service non quality goods

My Name is Michelle Saunyama, and I've been a cell phone contract client since around 20 December 2013, using the Huawei P6.<br> Mid year 2015 my phone stopped working and because it was still on contract I took it to the mtn store and I was advised that because it isn't a software problem they would need to book it in, check what the problem is and they advised before fixing it they will give me a quotation of the cost and if I don't feel the need to pay it then I would be liable for a technician fee of about R330 just to check the phone without it being fixed. I then told them it's a risk am not willing to take.<br> <br> I was then advised that I was due for an upgrade in August. I then opted to wait and extended my contract and I took the Sony Xperia Z3 compact phone. Upon taking it, it wasn't set up for Internet usage I had to call the call centre where I was sent from pillar to post until I came across a self service number to dial on their IVR on how to set up Internet usage. I tried calling them again to ask to take insurance unfortunately I was also given a run around. <br> <br> please assist with the termination of my contract