This number calls my cell phone 3 times a day.  Never leaves a message.  If it's not important enough to leave a message....... you're not important enough for me to answer.

I have received calls  to my cell phone - 2 per day for the last 5 days (one at 10:30 AM EST and the second at 3:30 PM EST). I haven't picked up and a message is never left. The following are other numbers that these calls come in under (almost different number each day):

312-568-7820
312-340-6898
312-496-6809
312-283-2165
312-523-0888

Telemarketing/customer follow up on behalf of Chase Bank.