Who called from 3122551956

I received a call from this number and when I answer, I hear - Please hold, I am calling with an important message.
Then, it hangs up.
And this is only on my cell phone.
only family have my nunber.
Caller ID: 312-255-1956

Calling for my son who does not live here anymore. They call 8-10 x a day. We have asked them to stop but no reply.

Twice a day for the last week on both phones.

Reported each and every call to DONOTCALL registry.

Disconnecting phones is next.  Can't talk to these employed harassers.  idiots-they don't listen.

This phone number is from 1st finantial bank.  I recieve something around 6 to 7 calls from them a day, it starts a little after 8 in the morning and continues until after 8 at night.  I do have a card with them and my payment are made every month yet they still call EVERY day. (including sundays) The one time i did pick up I thought it was someone I knew, because it was early on sunday.  The girl on the line was demanding that I make a payment even though a payment had been sent, on time.  So I refused, and told her that a payment had be sent.  She then got nasty with me, and threatened to send my account to collections.  

They call with several different phone numbers so now I have to screen all of my calls.  This makes it difficult when I am trying to get a new job.