Vodacom

So I took a 24 months contract of data router with vodacom, the contract I signed in my position is for 24 months. Somehow they (vodacom) they captured the contract as 36 months on their system

Three months prior the expiry of the contract last year 2019 I tried to call to cancell the contract when it mature but I was told by their rude consultants that it is a 36 months contract. I tried to explain and none of their rude consultants wanted to hear me. After AUGUST I couldnt afford to service the contract as according to me it has expired. I stopped their debit orders, until November I was told that the contract has been cancelled but I owe them for the month of September, October and November and it amounts to R2500.00

I cannot pay for service that I didnt ask for. Today they even blocked my voice line which is a Prepaid.