This happened to me when I had to reject a doctor from my research study due to his site manager being unprofessional and his site being an audit risk. I sent

This happened to me when I had to reject a doctor from my research study due to his site manager being unprofessional and his site being an audit risk. I sent a brief professional two-sentence vague rejection note thanking him for his time and wishing the best in his future research and he responded with an absolutely unhinged 17-paragraph rant, threatening lawsuits, calling my vendor CRO a crazy cat lady, saying she was too old to find happiness in life, ranting about San Francisco liberals (his clinic was in NYC), threatening to sue me, threatening to sue my vendor, threatening to turn us all into the FDA for fraud and wasting his time, and on, and on. It was completely shocking to read and really opened my eyes to how viciously and crazily people can lash out when they feel rejected. I was really glad I kept my rejection brief I can't imagine what he would have latched onto and ranted about if I'd given any specifics about why we didn't select his site. The weirdest part is he came to us very highly recommended from another doc!