Customer Service NON Existent

Your service is very poor and your assistance in rectifying your mistake is costing me time and money. Your team upgraded my contract and I was promised two devices on my upgrade. I could only redeem one device and was told that the redemption of the other device is on a first come first serve basis, of which is was eligible to received when the agent completed my upgrade. If you go back the the upgrade recording you will get confirmation of this. I then requested a cancellation of my upgrade and not a cancellation of my line. Now my contract has been cancelled and my number has been migrated to pre paid. I have contacted your customer service centre numerous times at my cost. In most times the call gets cut and there is no follow up from your side. The MTN Service agent at Morningside has also contacted your service centre at her cost. Your service level and team's unwillingness to assist me/us with this matter very poor. Trissa Naidoo was the name given to me who will contact me. Can someone with the proper authority call me to resolve this matter? I would like a solution of how this mess is going to be rectified as soon as possible and how am I going to be reimbursed for my time wasted and costs incurred. I await your feedback.