While the case here seems like a clerical snafu (on purpose?) a lot of people, especially seniors, are losing their homes because they simply can't pay the taxes any more.
This probably sounds ignorant but a big problem in PA is NY and NJ people moving into the state in droves for lower property taxes and better quality of living. The problem is these people think they're getting rid of their problems and don't realize they are the problem.
They bring with them their problem kids and drugs and voting habits which caused their damn urban problems in the first place.
The PA natives then have to deal with the resulting higher cost of living (extra police, higher school taxes etc). Seniors especially can't afford it.