You can't please everyone.
You guys did the work and helped a lot of people (most of which are well documented) and that alone is worth something.
If I remember correctly, not many people volunteered to make charity runs (feeding programs, buying groceries, etc.) and the only people at that time who took the courage to do so were you three.
Hindi rin naman kasi madali mag-organize ng mga charity runs. The logistics alone would be troublesome. Yet, after all that hard work, may mga nag-dududa parin. Geez.
Whatever's going on, let them be. Just keep up the good deeds. Let your actions speak for themselves.