Necroville (2007)

In Necroville, a city overrun by zombies, vampires, werewolves, and other monsters, Jack and his best friend Alex find work at Zom-B-Gone, a monster extermination company. Battling the legions of the undead at work and desperately trying to please Penny - his horrible, selfish girlfriend - at home, Jack's two world's collide when Penny's ex-boyfriend (a master vampire) returns to town.