Loyal MTN customer dissapointed in service

I have been a customer of MTN for 21 years and having been retrenched last year, my phone was cut due to non-payment. I have subsequently paid my account in full and although my line has been reactivated after hours of phone calls and visits at MTN stores and numerous enquiries made by Rapula at the East Gate branch and Enestensia at the Hazyview branch, my data has not been credited to my account. I have been liaising with William Meintjies in Legal, who has been very helpful in trying to rectify the error on my account with no success. I signed a contract on a one day special of 10 000 free minutes and 50 GB data per month and have sent proof of MTN notifying me of my minutes and data credited monthly via sms since date of inception to William. I need this rectified as a matter of urgency and if the contract will not be honored by MTN, communication as to what the situation is, in order for me to make and informed decision whether to continue supporting MTN or migrating to an alternative service provider. This is a business line and it is imperative that this matter be resolved as a matter or urgency. Thanking you in advance for your assistance.