Business ProfileforPanama Cool Heating & Cooling, LLC

On January 23, 2023 i received a phone call from " Paul" around 9:30 am asking for a $79.00 payment for a supposed invoice for panama cool from August 3, 2022. I told Paul that I was unaware of any invoice or outstanding charge and I hung up. I then received a text message asking for payment. I was not aware of any money due to this company, so I thought this must be a scam. I then called panama cool to ask if they had a Paul working for them and they said he would call me. He did call and said that panama cool came out and took pictures, provided no service but recommended a new unit, so I said this was a free estimate provided for a new HVAC. He continued to say I owed him $79.00, and said if I did not pay him now that he would place a mechanical lien on my property. I was still on the phone looking up what that was and I heard him tell his coworkers that " i was giving him the silent treatment ", I returned to the phone call and asked for his email. He provided it. I emailed him stating that no service was provided and only an estimate for a new unit was given and I was never aware of any $ 79.00charge and felt that he was being dishonest and unprofessional. Paul proceeded to ask for payment via three more emails even after I asked him to stop harassing me. I consider his actions and conduct of being intimidating and intentionally demanding to the point of unhealthy, hostile and offensive. Ridiculing me infront of his employees and continuing on when I told him I did not agree nor approve of any charge other than a free estimate ( again no work at all was done only pictures for an estimate was done) is much like a scam. I only agreed to a free estimate, no service was provided.To threaten a mechanical lein 6 months after the free estimate was provided is harassing, dishonest and fraudulent. The panama cool web site states they offer " free in person estimates " . This is what was provided and what was agreed to and i do not agree to a $79.00 charge . HELP!