MTN is disgusting

i called MTN in August to cancel and convert my line to a prepaid, the lady said its possible because my contract ends in October anyway, the process takes 7 business days, i called back two weeks later and another agent told me i was incorrectly advised this is not possible, i said i am holing the agent to her work as she gave me this information over a recorded line and i asked to speak to the retentions manager, i was told the a manager will calll in 24 to 48 hours two weeks went by again i called and was advised the same, to date noone called me to resolve my issue. MTN nad the way the treat their clients is disgusting, stay the hell awAY