Listed due to incompetence

I'm so disappointed. I have a contract with vodacom. When my bank details changed I went to Hyde Park to change them of which it was not done cos they kept on debiting the wrong account. I have to pay via vodacom app. They blacklisted me and lately they block my outgoing calls. Had to go to Vodacom Mall of Africa to get help they unblocked my fone and change my banking details.