Keep getting hang-up calls from this number on my office phone. Has been happening almost every day for the past 2 weeks. They never leave a message, making me believe it is spam and most likely a spoofed, local number. As a result, I don't pick up the phone when that number comes through on caller ID now.

I have been getting several calls from this number as well on my office phone. They do not leave a message. I stopped answering he phone from any 313 area code call unless I know the number.

I work in Dearborn MI and this number keeps calling my work phone several times a day and never leaves a message. I called back and it's some marketing company called Quinn Street (http://quinstreet.com/) saying they can help me "move my business forward." You'd think will all the hangups they get from me, they'd take the hint to stop wasting their time.