Pathetic, shocking, useless customer relations

There has being issues with my vodacom account since about October last year. I am still waiting for their technical/data department to contact me back. Also, there is an issue with their system and debit orders on my account, they haven't debited my account since December, obviously an error on their side, I have made sure of that. According to Vodacom, i am now 60days behind on my account, which is due to there error, and as of Friday, will be 90 days behind, because of their error. My line has since being suspended, and everytime i want to speak to a manager, or supervisor, i speak to somebody different. and my issue is not getting resolved. I will refuse to pay any arrears amount due to this. I urgently need to speak to a senior manager at Vodacom, as i am on the verge of screaming and swearing at the so called \supervisors"and \""managers\"" at customer care. """