Can I file Mechanics Lien?

I spent 14.5 hours deep cleaning a house. I told the owners a deep clean rough estimate started at $280, but I would not know the total cost until I was finished the job. The house hadn't been cleaned in a long time. Plus the had a 100lb pig, 3 dogs. Inside pets. The pet hair and grime was on doors, base boards, walls windows, furniture bed frames, everywhere-every door, windowpane, etc. had to be wiped with a new rag 3x. With crud critter or windex. Ceiling fans~black hunks of dust so think I used 12 swiffers on 3. Dog urine on basement floor. So I'm painting this picture to make one understand the labor & materials were triple of a normal deep clean. They refuse to pay when they get invoice because they say I quoted $280. I threatened calling the Police for "Theft of Service" they begrudgingly paid $280. I was to put a lien on their house. Can I? I also removed mold from the tub.