We are a contractor who did work for a Management Company upon request (yes, we have been onsite in the last 30 days) but we did a larger project 1/30/2023 for which we did not get paid. The property Manager that hired us unexpectedly pasted away and the Building now has a NEW Property Management who took over the account. We have been contacting them monthly for payment and have now learned they are unable to get new signer on the checkbook. He refuses to sign any of our open invoices.(signer is REAL owner of the building not property management). Any advice other than file the Mechanics Lien?