good morning! I am a carpentry contractor in New York City. We were called in on a job back in May of 2019 to take over for a failed subcontractor. We agreed to a man day price of 75hr per man. Daily tickets needed to be signed and confirmed with the superintendent which we did. We were issued an initial PO for 75K. Based on the daily manpower we quickly exceeded that amount. Cutting to the chase, our last day on the job was July 3, 2019, the total amount invoiced was 300k, we received a payment in may for 50k and since then have not received payment. Majority of the work was performed in June and based on the way the requisition process goes we should have been paid in early September. We were told the owner shorted them payment and we signed a partial lien waiver for a smaller amount of 67k, That payment didn't come through and we were told that based on the PO's we could only be paid 25k on this next requisition. We signed the partial lien waiver for that amount with payment for that amount supposed to be next week. We still don't have any answers on remaining payment. We have reached out daily with little to no communication. Need a little advice on how to proceed. I don't want our lien rights to expire and am looking for the fastest way to get paid.