Damon was growling, He wasn't in the mood to be kind to them. If they pushed him too far, he was likely to kill them. Damon was also hungry which was making him more angry. He held them against the wall and was growling.
"I am not letting you go until you promise to leave." 
The vampire was smirking again.

Damon didn't seem likely to give up. He was quite determined to threaten them the rest of he day if he had. The vampire was glaring and he tightened his grip. He stabbed them with a stake he had in his jacket in the side as warning. He knew it would hurt.