Hello, I had a contractor pour concrete to make a patio in NC . I paid him full in cash. That contractor had subcontracted to 2 more subcontractors above him (so contractor doing the actual job, another subcontractor and then supplier above him). Now concrete supplier is saying he will put a lien on my property for 3K payment he needs for materials. Can supplier put a lien on my property or is there another way to get out of this double payment without much headache? Fyi, we never had spoken to or have any contract with that supplier until he called us by getting our phone number from google using my address.