Time Warner Claim for cable installation Youngstown Ohio

I am the owner of a 72 unit apartment complex in Youngstown, Ohio, and in May of 2015 landcapers were planting flowers in a flower bed within 8' of a building.  By accident they cut a Time Warner cable.   Service to the building was interrupted but within a few hours TW was there and patched the cable, all back up and running.   A week later we noticed a TW truck at the street  and they informed our handyman that they were installing new cable to the building (about 400').   They didn't tell us though that WE were going to be billed $2100 for the installation.   Granted, we cut their cable accidently, but, we had nothing to do with the cable to the street. 

Within 6 weeks after the 400' of new cable was installed we received a notice from a collection agency that the billing had been turned over to them!   We didn't know of the billing nor did we know it was turned over to a collection agency.  The installation of 400' of new cable to the street was totally unrelated to our cutting of the cable to the building and it had been repaired.   It certainly looks like TW was just waiting for us to make a mistake somewhere so they could upgrade their cable and bill us for it.  I complained and made a counter argument to the collection agency but they responded a few days later saying TW says we are liable and must pay the $2100!!   What a ripoff!!! 

TW will lose on this deal as we have now put into our leases that TW is NEVER allowed on the premesis and is forever forward forbidden to install cable, phone or any service to our apartment buildings.  In the long run this is going to cost TW more than the $2100.