Not a very good sittuation at all. I agree with all the others who say dont confront him your self and file complaints and keep all evidence even if you don't think it will help right now. I don't like it when it takes a long trail of complaints and evidece til something can be done but it just seems to work that way some times. Voice mail not sure how that works but I assume it has to do with phone number and or email doesn't it? Can't those be changed? Not sure if you said you were recieving letters from this person or if just the company was. If it is you personally and they are being hand delivered deffinately file complaints until you become a nucence. Some times it's the only way. There are stalking laws today thank God but it also came at the expence of lives.