Hello, I have a customer that is approaching the deadline of being able to submit a mechanic's lien. He has said he will have payment for us on 6/2nd or 3rd, but our deadline is the 5/29th. I let him know of the deadline and how we have to have payment before this in order to avoid placing a lien and he replied with saying 'you don't have a signed contract, you cannot pursue any debt collection without a signed contract'. So, can we still protect our payment rights without a signed proposal/contract?