MTN still not resolving Service Request after a Month Later

I was due for an upgrade 03 Dec 2017. I went in store for two hours to find out I can not upgrade as there is a international roaming service pending activation on my account. I requested this service quite some time back and was told it is active to find out now it's not the case. MTN logged a request with ref Number 1- ********** 1054 on the 04 Dec 2017 to remove the pending activations to enable me to do the upgrade and advised it takes 72 hours to resolve. It's more than a month later now and still not resolved and MTN can not answer me why not. I have posted this before on Hello Peter then a person from MTN with the name Charelle Brockman rep**** requesting my reff number to assist me. After I gave her the reff number also more than a month ago never heard of her again and nor any feedback from MTN.. Totally unacceptable service. What do one do now??? What more can I do?? Cancel and move to Vodacom it seems to be my only options as MTN is not reliable!!!