Who called from the number +1 (609) 305-9571

This number has been called me 8 times since Feb 14th asking for Mr. Peterson (as I am not), after the second time they called, I instructed them to remove my phone number from their calling list. Once again they called me today (call # 8), at which I again told them to remove my number from the calling list. I decided to looked up the number on line and it showed it belonged to no one. So against my better judgement I called it, and to my surprise I got a man who asked if I was a Mr. Peterson, I said no (of which I am not), the person hung up on me. I called back again and got a woman this time who also asked if I was this Peterson person. I told the lady no and as I had asked in the past to remove my phone number from their calling list, she also hung up on me. If this were a real company of some type why would they hang up ? If this isn't some type of SCAM, I'm not participating in.