Disappointed.

My aunt and i bought rather we bought had agreed that will be paying for the fibre with Telkom ,they took time to install it and we have been waiting for them for the longest time, so eventually they came and gave the router so it was connected but mind you we have never received any data from them or any sort of connection so now they have sent me an email saying we are owing Telkom R2,613,83 we just don't understand how and i told them we no longer working the both of us also its messing with my credit score is ruining my name ,so they say that to cancel subscription i have to pay that money but my complain is that we never used anything or nor got any data from them so how then are we supposed to pay them. Honestly i trusted Telkom but this is not the way to do things .