Blocking of a line

I cancelled my contract last year 5 June. They did not prosess it an kept it running. Without notice on 1 Jan they cut my busness line it says number does not exist when you call. I have went into the shops , called the leagle department , called the call centres. The consultants just refuses me to speak to a manager or head office they just put the phone down in my ear. They dont even want to speak to the personnel in shop. I am now 8 days without any network and a total loss of income and everyone just pulls up their shoulders. I cant even get through to headoffice. Im at a point where i am on my way to get a lawyer to sue vodacom for loss of income.