On caller ID it reads "symphony center" and so far today they have called twice - I did not answer. I did answer yesterday and asked them not to call. About a month ago, they were calling a minimum of once a day.
called my phone, no message -- same thing happened with the same number ending in 3509. i only know 1 person with a chicago area code, though, so idk what it's about.
I've received several calls on my cell phone from this number, but I've yet to answer it. They usually call during business hours. They never leave messages. I googled the area code and it turns out the area code is in the Loop in Chicago.