Who called from 8479792000

The call arrived at 2:00am and rang until voice mail picked-up the call.  the caller id text indicated "Chase".  I am a JP Morgan Chase banking customer.  A return to the call indicates it is not a working phone number.  This is the second time I have received this call in about 6 months.  My phone number is unlisted and I am on the government do not call list.

Yeah got a cell phone call from this number. Hang up on the voicemail

I recived call at 3:38 am there was no one speaking when i call back the massage comes on that the number is not a working number

call at 3;38 am with no one on the other end called back the recording indecate it is not a working number

Got a call from that number (847-979-2000) at 5:15 a.m.  (Luckily, I was already up to go out for a run.)  No one said anything on the other end.  I'm on the do not call list.