Worried someone is trying to find me and hurt me, sold me my bike at harley

[It'salmeaMariot]

dealership? I did not have any idea who this guy was when I saw the message. He sent a message on my facebook saying "Are you retarded?" I responded asking how does he know me. His page said he worked for the Harley dealership, further investigating I found he's one of the main guys who sold me my motorcycle! I never kept contact with him i mean why would i, and now he's searching for me online and starting to send me emails. I'm not in the right state of mind to deal with this as I'm barely holding it together until my psychiatrist can see me. I'm just a loss for words right now and freaking out so bad. What should I do? I dont know why he's contacted me in this manner it makes me feel he's wanting to hurt me or kill me or has been spying on me this entire time. He works there and from all the paperwork he knows where I live!