Contract issues

I took out a contract with Telkom Direct Potchefstroom on the 15th of December 2016. I had asked for a month to month contract as our options were 24 months and get a router or sim only and the contract is month to month. We had a router and had an option of moving thus did not want to sign for a 24 month contract.

I tried cancelling this the other day but was told I had a 24 month contract. I asked for a copy of the contract and got an all electronic contract where everything is filled in via computer and am told that is what is kept.

I am not impressed at all as if this has to continue I will have to pay for something I cannot use or pay penalties when I specifically asked for something to prevent this.