Incorrect billing and neglectful staff

Still awaiting Alice van der Merwe (complaint analyst) and her so called 'managers' to get back to me after a couple of months where they (MTN) are unable to present the voice recording which is the only evidence of contract yet they keep on over charging. Most probably found that they're guilty and hoping the problem will dissapear..

Also awaiting contact information of the department which my laywer can liaise with?

Thank you in advance for the continued poor service over the last couple of months.