Poor attention to solving their problems

Trying to sort this out via the call center or email doesn't work, maybe someone will listen on Hello Peter, i don't like complaining, but if this is the only way to be heard then i have no choice. My account was previously with Nashua Mobile. They closed down and the account got transferred directly to MTN. Service through Nashua was excellent, cant say the same for MTN. They didn't properly process my upgrade, in which i chose a different package. I called the call center last month where they promised to sort the matter out as well as credit the previous two months overcharges to my account. This didn't happen, instead they charge a migration fee. I requested that the SMS bundle be removed from my account, also didn't happen. Trying to contact MTN to sort this is impossible, emails get ignored, I called the call center numerous times and selected the option to speak to a consultant, numerous times the call gets ended as soon as it transfers to the consultant.. How do i go about resolving this simple matter??<br>