Didn't answer it since I didn't recognize the area code

Today at 12:35 pm I received a call from this number: 305-000-5731 and when I answered the phone it immediately disconnected.  I tried to call the number (which comes up as a Florida number) back and the recording says it cannot complete the call as dialed and says to check the number and dial again.  I get one of these calls at least once a week.  I will be keeping track of this number and will be reporting it as harrassment.

I got a call from this number this afternoon.  

It appears to be a credit card company.

When I got a live person (April) on the line. I informed her to remove my number from their list.  She immediately hung up!

The caller alleged that the offer was to reduce interest rate on any credit card i had and requested the cc number of the card and/or my ss number.