Incorrect Term date - Being Refused to cancel 2GB Data Contract

I've never in my whole life experienced a business that bullies it's customers they way Vodacom does. Been asking them to cancel my 2GB data contract for over 2 years now and I've been advised that I cannot.

I have supp**** proof and solid evidence to numerous agents I've been speaking to and they all insist that the contract term is captured correctly. I'm being forced to continue paying for a contract I do not want - who pays R110.00 for 2GB data when they can get 10GB for R135??? Does not make any financial sense at all