Vodacom fiber

I had or should I say have fiber with vodacom that I requested to be closed in May this year and vodacom refused to close it. This continued billing me until they decided to hand over the account to some attorneys. I called several times to seek clarity, vodacom could not answer, I ended up making arrangements with the attorneys due to frustrations, as soon as I started paying vodacom withdrew the account, now I'm being harassed by other attorneys. I need assistance as I may end up being blacklisted for something I do not even know.