Disappointed by lies

So I first joined telkom in October 2018 and signed a mobile contract, the service I received was fantastic, a few months later I was called and offered 10Gig a month contract that I specifically requested can it be transferred to my contract number. I was told YES, so I took the contract. I tried to transfer data a few times over a two month period but was unable to. I eventually got to speak to someone and was told that on that specific contract it could not be done, so asked to have it cancelled and was told I would have to pay a termination fee, I said no way how can I be expected to do that on a contract that does not do what I was told it would do, this was almost 3 weeks ago and I am still in the same position