This is a new kind of scam...hen ands if you call back the message ays "please press any digit to be removed from the list.  This may take anywhher from 24 to 48 hours.  Thank you"
First off we don't call the keys digits and secondly once you press any number their system places your phone number on the long distance cards they sell and you get charged.  Its hard to reverse it.  This happened to a friend of mine.  Never follow their directions... Just block the number.  These scum bags are all overseas.