UPGRADE

It's is so annoying to a point that I'm dealing with the Network provider that's bad in network coverage and also now their service. As MTN's client I thought they cared about their customers it happened that I was ****** early November last year, I then blocked my number and blacklisted myself phone as it wasn't insured, went to MTN and they told me that they don't do premature upgrades I'm gonna have to wait for March or April as it will be after the 20th month and I could do my upgrade, I was then told that I can also put an application for an early upgrade as it's the 19th month now. What's frustrating now is that I've put my request Monday on the 14th March 2016 , I've been calling and sending emails to MTN no one has attended to my request everytime when I call I'm being told that it's gonna be attend they see that I've put a request and the are 4 reference numbers to show that I've escalated my calls and being told about a supervisor that needs to authorise it but till today when I called no one has attended to it, I'm in a point of paying off this contract and move to another network provider which can attend to their customers quick...so damn fed up with MTN.