This is what they do, if you just drop cable and not all your services with them then they charge you this fee to come out and turn it off at the pole but if you disconnect everything they don't charge you. go figure!!
Tell them you already disconnected it at the house, would they kindly come out and remove the drop from your house to the pole as you will not be needing thier services any longer ....
Then see what they say
Jimbo