giving too much

I recently discovered that someone I know is insisting on giving 20% tzedakah. Apparently there are special benefits listed in the gamara for people who give that much charity.

Of course, his wife went without a mammogram the other year because they couldn't afford one. His wife and children regularly visit the gamach for their clothing. His son didn't get even get a cake (home baked or otherwise) for his birthday. There isn't a dime put away for their old age.

A friend of mine has offered to assist with an upcoming simcha. What they don't realize, is that she is helping them out with *her* tzedakah money because *they* insist on giving 20% to others.

Sometimes, I wish someone would slip a word to their rav about this.

Is this an isolated instance of insanity, or are other people doing this too?

I suppose I don't have a right to be angry, but this feels wrong on so many levels.