Small Roofing Company’s Lead Contractor Ran Off With Payment, Owner Now Contacting Me.

Hello All! Posting this for a co-worker who is not Reddit savvy. I have most of the details regarding this post, taking some liberties on figures. He is basically looking for what type of an attorney to obtain and any general advice. Thanks in advance!

After a big storm in Texas, a roofing company’s lead contractor knocked on my door offering to replace the roof using an insurance claim to pay for majority of the roof. After inspection the roofing company (both lead contractor and owner) estimates $12,000. Claim was submitted. The claim was approved by our insurance and the proceeds were sent in two checks to my account. The first check of claim (est $8,000) was deposited. Wrote a check to the lead contractor, contractor gave a receipt with the amount and signed the company’s name. Work began and was completed in two days. Once the second check was deposited($4,000), I contacted the lead contractor, he said he will be by at the end of the week. At the end of the week the lead contractor called saying he will be by to pick up the second portion bust asked for cash. Didn’t think anything of it because we’ve been in constant communication since the process started. Lead contractor came by, took the money left a receipt stating Paid in Full and signed the receipt and left. The following week I receive a call from the owner asking for the second payment. I stated I gave the money (cash) to the lead contractor and I have a receipt showing paid in full. Owner asked for me to contact the contractor because he could not reach him. I attempted to multiple times, no luck, informed the owner of that. Forward to a month later(today), owner calls and asks if I can contact the lead contractor again. I attempt to with no luck. Owner than texts, stating he’s going to file a police report and why I paid with cash. I stated what I’ve already said in the past to him. Lead contractor called, asked for cash, he picked it up, signed a receipt paid in full, and that no where in the contract did it say we couldn’t pay in cash. And that the last communication so far. I am stressed. Should I get a lawyer, if so what type? Thank you for reading if you made it this far!