POOR SERVICE

I Lost my MTN line *** two weeks ago, i went on to request a sim swop after speaking to one of their consultants who promised to fax me a letter within 48 hours. 48 hours lapsed i decided to cancel the contract so i could do the sim swop on my own of which the consultant asked me for an alternative number they could call me on. i gave them the number then they went on to call me on the lost line instead of the alternative.i made a follow up call after 48 hours they told me they tried contacting me but my phone was off of which i asked them why did they not use the alternative number? got no clear response from the consultant instead he went to request another alternative number, i gave him *** and 72 hours later i still have not heard from them. i guess they are still calling my lost number. i just need them to cancel the contract then i do the sim swop myself. i am losing a lot of business because of their incompetence . i am self employed and changing my number forever will be a major setback for me