INCORRECT BILLING STILL NOT SORTED OUT

It has now been about a month an half that I've been trying to get MTN to rectify my account and as to date still not right, wrong amount again debited off my bank account today. I was requested to send a statement from Nashua Mobile to them which I did. Now my mails are being ignored when trying to follow up. Tried to phone this morning and only got music the whole time and no consultant answering the phone. I am at a point where I want to get my lawyers involved and I want the contract cancelled with immediate effect as I signed the contract with Nashua Mobile and not MTN. Not my fault Nashua Mobile closed it doors. Really disappointed with MTN and would not recommend them to anyone.