What do you do?

An Orthodox Christian in an other part of the country, in another jurisdiction signed a contract with me for many thousands of dollars. I gave him a huge discount for the sake of our brotherhood. The money was due months ago but he has not paid. He does not return phone calls, he does not respond to letters. I just found out yesterday that my company is suing him. I hate this situation. I am embarrassed than an Orthodox Christian is doing this. The comapny is being hurt financiually. I am being hurt financially. I know where he goes to church. Should I contact his priest?