SIM card data and minutes transfer misery.

In January I opened an MTN contract over the phone. i advised the lady I speaking to that I would like to convert my current prepaid number to be contract and not receive a new sim. She then informed me that they will send me a sim since its part of the package but I shouldn't use it, once I recieve the device and sim card I should contact MTN contracts department and ask that my bundles and minutes on the new sim be transferred over to this new one. I did exactly that after receiving it and the person I spoke to on the line advised that it will take around 12 days and that I will receive an SMS once its done. 12 days passed with no SMS or data or minutes transferred over to my sim. I then called the call centre again and spoke to consultant Anda Fini whom I asked to also correct my email address to not have the k in the begining, she said she had done that but I am still receiving SMS' on this prepaid number that my statement has been sent to the email address begining with a k. She advised that regarding have the data and minutes transferred over to the sim I should go to an MTN store, I did exactly that the following day and they advised that since this contract was opened online they can't make any changes. Thisi is really inconviniencing and frustrating as I am now paying for data and minutes that I am not using. Please help and have this corrected.