Blacklisting Me for no reason!!

Vodacom has handed an account over to VVM. I got an sms to say I have been blacklisted. I have no idea what this is about so I call. I speak to Bongani Pelo who was so rude and disrespectful that after 5 mins of his abuse, I hung up. I DO NOT HAVE A CONTRACT with vodacom. I asked him to send me a copy of the contract and he refused!! How does the law allow people to be blacklisted and then they dont want to provide them with the proof? I have rights and I feel it's being violated. I would like Vodacom to tell me how they sleep at night treating consumers this way. I want a copy of this contract . Then I want my name revoked from ITC. Then I want an apology. I am appalled that people are treated like this. Its like they want me to cringe into submission and just pay for it because they are so threatening and me as a normal consumer has no power! I would appreciate it if this is resolved sooner rather than later. Oh yes, I have a contract with Autopage for more than 6 years already and I have an impeccable record with Autopage.