That particular guy was an anomaly. He claimed that his 'friend' sent me his CV and that I then called every single company on the CV trying to pick up jobs. I did try and reason with him and he refused to point out who this particular 'friend' was and it was simply his insistance that I was corrupt against my instance that I kept my word about not taking advantage of my situation.
Even if he was trying to be a bad guy why bother sending hate mail? And the guy trying to get him fired was particularly strange.