I'm a customer and I've paid my general contractor according to our contract in full. However, the contractor claims there are overages or additional services he performed not covered by the original/change order and is trying to get more money from us. I terminated his services because he was not showing up at the job and not available whenever I try to reach him. He didn't finish the job in entirety and left many loose ends which cost me money to clean up so I can pass inspection. Can he file a mechanical lien against me even though I've paid him in full according to the contract but is now saying there were additional services/ overages not covered? He never communicated the additional services and cost as something outside of the contract until after we terminated him.