Binded by contract that I am not even aware of.

We had Telkom internet on a 2 year contract. After the 2 year contract we went on a month to month basis. We received a call from Telkom informing us about cable theft in our area, and they told us that they will be sending us a new router to go wireless. We were not informed that accepting this router will then bind us to another 2 year contract. I wanted to let Telkom know that we have migrated to Aftihost and do not need the monthly service anymore. I was told that I can not do this, as I am on a 2 year contract. A contract that I am not aware of, nor did I consent to. This is total BS. I will even give them their router back, but I no longer need the service