I was contacted by a guy needing tile work done thru a lead generating firm called thumbtack, this guy flips houses and said he needed a bathroom floor put in, so I went to visit jobsite, when I arrived he showed me the area, and he said can u finish this? He attempted to lay the tile but it was the worst job I ever saw, he asked how much? I replied that I like to make 400$ a day, he asked if I could do it for 350 a day , I said after we get into it we would talk about it, well trying to fix his mess would not work at all, because he layed the tile over another tiled floor, and everyone of the tiles he layed were already coming loose , and I told him they all need to come up because in a month they all would be loose, he agreed, so I tore them all out cleaned the area and began the process, I took a grinder and scuffed the surface of old tile so that the mortar would have something. To grab, then I started laying the job out and it was the makeup. Area of the master bath and the room was round so it was difficult to make all the different size cuts till I got the room all cut and then I proceeded to mortar the tile down, .got that room finished and startedthru the main bathroom floor area, after 3. 1/2 days I. I was finishing that area and he wanted me to do a tub shower surround but he needed to get the plumbing finished before I could start but the other walls were really out of wack so I showed him the problem and told him I could fix it before the tile work was to begin, and that took about 3 hrs and then he had me install some frusta kind tiles on a wall he didn’t finish and do 10 sqft of wall tile that he didn’t finish either and it was getting late in the afternoon and he decided he would lay the shower himself, I said ok and started packing up my tools and loaded them in my truck and went to him for payment for what I had done, and I put in 48hrs in 4 days so I was expecting 1600$ for my services, he added me 400 $ and I said what’s this? He said you should of gotten that bathroom done in one day and u spread the work out and all I’m paying is 400$ we argued and argued and I said this is not what we agreed upon , and he just kept saying I should of gotten it done in one day, needless to say he wouldn’t give me anymore money and even said he is prepared for the lein , whatever that means but he has this unit sold ,will I be able to get Mechanic’s lein filed before he closes the sale on this house, what can I do to protect the money I am suppose to recieve, this all took place in St. Louis missouri and it happened yesterday