I think that you sound like a good person to me. Maybe be happy that you helped those people when they needed it most and don't let the upset of them not paying that back take away from that ? I am sure at some time in the future you will be remembered for that and they will be grateful. Lots of people have done things for me and to this day I am grateful to them but maybe didn't show that as well as I should at the time so maybe it will be the same.

Maybe it is time to look for some new friends? sorry to say x