2014 customer contacts me through Home Advisor, needing concrete porch & steps. I do job, he pays, no problem. Fast forward 6 years, he plagues me with voicemails that he has cracking and needs me to take a look, and asks which form of payment do I want, cash or check? I finally get there, as this job is 2 hours from my area, on large Lake. We discuss issue and he agrees to my price of $10,800.00 for demo of a portion of concrete and repour. I do job, renting jack hammer, other equipment, buy concrete, and pay my guys, job turns out good. My findings are that the cause of this isse is his place was built on filldirt, and everything is sinking. Job is complete, I knock on door to submit bill, NO Answer! I leave bill in door, 2 weeks later ... No Payment. I stop up there yesterday, lights go out when I pull in, I pound on door, he answers with an attitude... saying he's not paying but $3,000.00! He doesn't feel he should pay, I say, why should I pay for your house being built on fill, everything is now settling after 20 years. He says "I wanted the job done"! He apparently sent check for 3K, still owes 7,800.00. What are my Rights!