How did being a philanthropist affect Scrooge?

Initially they annoyed him by assuming he(scooge) would give money to people who were not working hard for it. He asks are there no prisons, are there no work houses? Are the cells and the tread wheel still in vigorous use? He then sends them on their way with nothing. Then having seen what his future may be lie he seeks out these men and makes them an unknown contribution stating that there is extra in there as interest for not paying before.