Abandoned for Inheritance

My parents abandoned me at birth, then came back 16 years later to ask for my inheritance.

They left me at the hospital, and my amazing grandparents raised me. After 16 years of

silence, my bio-parents reappeared with their new kids. During our second meeting,

they asked me to convince my grandparents to add their new children to the will,

giving them a share equal to mine. The audacity is insane because my own father isn't

even in the will, but I am, treated like one of their own kids. They didn't come

back for me; they came back for a payout. I kicked them out.