Vodacom changed Contract to Pay-As-You-Go

On Friday 06 November my phone stops working on anything going out. Went to Vodacom outlet @ Woodlands @ around 17:00 where I am informed that my contract was (unilaterally) changed to a Pay-As-You-Go by VODACOM. I MUST phone their cancellations department to rectify the problem. 1958:on 4th try: Elton notes that a person changed it on their system around 11:30-12:00 but that the matter must be investigated: I should be contacted next day and then it will be fixed -SMS Ref.S3-9LEBN-NMID Elton loaded some airtime - Thanks. Then NOTHING. Monday 9th: Vodacom Service @ Menlyn can't help: systems down