Phone deactivation and taken off Vodacoms system

My cellphone ( ***) Acc numberNM*** was cut off approximately 2 weeks ago for non payment.Two days thereafter I was unable to recieve calls as well.When the number is called it says the number does not exist. I then tried to phone Vodacom from my phone on their tollfree number but my phone was unable to do so. I then did this from another phone. When I spoke to a consultant she informed me that my account was R11000.00 rand in arrears and the full amount would have to paid before reconnection was done. I asked her how this was possible I told her I was under the impression that my office had been paying this bill every month. I asked her why I had not been disconnected after ! month ( which is approximately R2000.00 ) Or never been informed of the arrears ? She rep**** that there had been an error from Vodacoms side but that was not their problem. I must pay up by the end of March or lose the number completely. I asked to make arrangements to pay the account off,but that I needed to at least recieve calls because this is a business line and being a plumber this is my only source of income. She once again said this was not her problem I have had this number since 2007 and have spent in excess of R250000 on these contracts between Nashua Mobile and Vodacom and this is the treatment I recieve ?????DISGUSTING!!!!! And just to top it off ,I recieved a new phone in Jan 2018 which didnt work right from the outset. After going in for repairs 3 times ,I am still waiting for the phone to be returned to me. I eventually gave up trying to argue about it. This was done through Vodacom Greenstone