Lost equipment is one thing...
That is what homeowner's insurance is for. It sucks, but the sub is responsible for borrowed or leased equipment. If it was a Hertz rental car in the driveway would they expect Hertz not to come wanting their car back?
Vacation fees is a different matter, especially $15-$20 to do NOTHING. Subs would be better off canceling their service and coming back in 90 days to a bunch of free promos and Comcast would do better by trying to KEEP subscribers rather than giving them a reason to jump ship to DirecTV, Dish or a telco.
Meanwhile I'd have my contractor hit up Comcast for the inside wire maintenance plan Let them reinstall all the RG6.