Nimble Group and Vodacom

I paid my Vodacom account that was handed over yo Nimble Group, this year on the 24 June 2017 and they sent me a paid up letter on the 24 August 2017, since then I called them each and every week for them to removed my name on ITC, but what I experienced was Agents that are not consistence talking different stories, and referring me to incorrect people, basically they were making a fool out of me, the most annoying thing was the also used to call me day in day out for the money so that they can remove me from ITC, and I paid them now they don't stick to their promise I hate them cause now I can't do anything, and I'm wasting money calling these inexperience people, I'm so disappointed in Nimble Group and Vodacom