A Misunderstanding
At some point in their lives, adopted children will try to find members of their biological family in order to get a better understanding of where they come from. However, an adopted child can never be too sure how the biological family will react once they reach out. All they can really do is hope for the best.
This man was given up for adoption by a wealthy family and somewhere down the road, through a DNA test, he was able to find his biological grandmother. Hoping to form a bond with his grandmother, he contacted her, only for her to assume that he was trying to extort her!