Stupid salesman blew $600k job.

The salesman at a local lumber yard, he's pushing 80, but brings a lot of experience to the table. I've worked with him 2 years, some screw ups, but ok.

I've courted this client for 11 months, got my license in that state, new llc, everything to get this massive exterior remodel in a very high end community, great visibility to community traffic.

Long story short salesman called me as I was wrapping up, needed to make a few small changes before they signed. I sent it to VM. He fucking called the client, knowing I was there as we'd spoken 3 times that hour.

Customer wanted to put 50% of the windows down, I had my mark up on it. Salesman said, ooh that's much more than half, it's really x. He just gave the customer the wholesale price, my price.

Now the customer wants to not do the job, thinks I'm a robber for not selling him the windows at my cost.

Do I have legal grounds against the salesman? I dont want to go there, but he just cost me $134k in profit, plus that job would have brought in 2 or 3 more similar jobs.

Why would he do that to me?

I called him before I was off the street... he said he didn't realize it. Ugh.