When I offer to help someone out, I find it quite natural to do what I offered.. I find it bewildering however when I tell someone about a problem I have, they offer me to take care of it and then just don't. (mind you I did not ask them for their help, no they just offered it) Since the help was voluntarily offered I figured I could count on it. Seems nowadays that principle no longer applies.. So if someone offers to help you out, best to ask another one to do the same, then at least the odds are slightly more in your favor....