Call Centre Misinformation

I have recenctly contacted vodacom with regards to my account I was told that my outstanding account was handed over to Credit collection organization and there was nothing that could be done about it , i was given false information regarding this by 3 of their call Centre agents who did not know where my account was handed over to , till today Vodacom is only telling me that there is nothing they can do since the account is handed over and i was even being told that it is none of their business anymore