UTTERLY DISGUSTED. Cannot fix their own error. Incorrect contract loaded

I purchased a phone online with MTN. On the 6 August 2018,a consultant called me to finalise the purchase. On the 10th of August 2018,the required documents were sent as requested and indicated the phone that I need on the email.

On the 15th I reveived an SMS from DSV courriers stating that they my delivery from MTN. On the 17th I realised a change on my airtime balance. There were minutes loaded. Looking at the loaded minutes I realised that loaded package was incorrect. Immediately called MTN on ********** and explained that I suspect the wrong package has been loaded. Indeed I was correct. She said I should go the nearest MTN shop to cancel before the phone is delivered. I did but could not be assisted as they could not cancel because it was not loaded by them.

On the 20th I called MTN and explained again. I was unable to use my phone for almost three weeks as was scared will be billed. To date the incorrect contract has not been cancelled. I have been calling,emailing still nothing.

It's almost a month and MTN cannot fix their error. Please this mess. Really it's not be difficult. This is your system after all. Utterly disgusted.