Ever felt stupid when all you do is care and try every possible way to help a person
yet all you got in return are shit?
well everyone when through this kind of person sooner or later
some even meet more than a few
the best possible way to counter what these kind of people in return is simply by doing even more nice things.
Try to avoid throwing shit back at them as revenge, especially not literally.
because it won't do any good.
try to keep calm and say this to yourself
"I will do my best to help this friend of mine, because I know Allah will reward me someday for my good will"