888-638-9660

no message left.

It's CitiCard, calling about a late payment on Citibank Sears card.

Hmmm . . . Citibank Sears you say . . . we don't have one and yet we keep getting calls from this number.  And, they do not leave a message.

Okay, I'd like to update on my previous reply.
The calls from this number keep coming on my elderly mother's cell phone.  She uses the phone to reach me if I'm gardening, at work, or out of the range of her yelling for me :-)
This number is registered with the "do not call" list.  We pay for the phone, so it is in our name.  However, this number is not one we provide to anyone.
My husband decided to call the this number to find out who they are and what they want.  
A woman answered the phone.  She kept insisting that they needed to verify information from him, i.e. identifying information.  When he would not provide the caller with the correct spelling of our surname which they had completely wrong, our address, his ss#, etc., she told him that she was required by law to record the call and "report" him.  She basically threatened him with legal consequences.  Then she told him that she was disconnecting the call and hung up.
Has anyone else spoken to these people?
I think this is a good example of "phishing".

number calls me 20 times a day will never leave a message and I will not answer it

They have called 3 times just today, I answered once, there was no one there.  I placed it on the speaker phone and set the phone down.  43 seconds after they called me, they hung up.

the two times I did not answer they did not leave a message.

I received my first call from this number very early this morning.  rachel34333 says its Citibank Sears Card.  We purchased a new heating and cooling system through Sears for our home and the installation was very poor.  The unit leaked water in the attic and damage wood, drywall, and paint.  We paid to have the damages repaired.  We shut off the circuit breaker to the unit and called Sears at several numbers local and national headquarters.  We only got an answering service that said lots of people had been calling.  We never got the heating and cooling system repaired so we asked Sears to remove it.  They refused.  Headquarters customer service and Sears credit card said I must return the unit to a retail store myself.  So I returned the unit to the local Sears retail store.  I guess the local store never told headquarters or the credit card department.  Seems they don't communicate between each other very well.  I followed their instructions, though.

I know my family was without cooling during the hottest part of the summer because of Sears.  Home Depot installed a new system and it works great and no leaks in the attic.  Sears never paid for the damages their unit caused to our home.

I returned a phone call from this phone # and I was asked for my sears credit card number.  I told him I do not use my card and then he asked me for my social security number.  I told him I would not give that to him and then he hung up on me.