It's not that it's a Voip call and they can't be traced...they are spoofing their caller id which has been illegal in this country since '07 unless you're in law enforcement, social services, and a few other exceptions.  It may be a Voip call, but that's not why the caller id is phoney.

You guys gotta stop lettin them piss you off. Have fun! Say to them... "What???!! No [***]?? It expired?? Holy mother of george bush!! You can't be serious!! Well what in hell can i do??" Let them go on with their pitch...string em out as long as you can... then say... "Huh?? Could you repeat that?? I was just watchin on fox news isreal just nuked iran..but i'm still interested..could sure use that warranty after the rapture!!" Or try this... " Ok son...I'm interested in your fine offer..but first i must ask you pray with me..repeat after me... dear lord...forgive me for pestering people during their time of leisure..etc etc.." Look up a book written before the Do Not Call list.. "Fun With Phone Solicitors" by Robert Harris. Look up web sites with ideas on how to handle the annoying twits. If you have friends over during one of their calls...enlist them to perform brain surgery on the annoying [***]! Have a ball...then tell us about your creative American methods dealing with these terrorists!

These peope call everyday wanting to lower my interest rate .and they are omitted result , lots of blah blah blah tell they get your personal information .you never get them to stop calling ,they hung up .

Well they are a scam, They didn't even know the name of my credit card company. I got really mad. Told the guy as I was a senior citzen, i would like to record the call for my records, with his permission, of course. Somehow we got discounted. this didn't stop the calls. They appear to be using a Cell Phone, maybe even a throw away cell phone. There is more then one outfit doing this. the attorney geneneral has 72,000 compliuants on one company doing the car warranty ad. Evidently some idiot sold the software that has been used for this to several companies, and told them "The calls can't be traced, sodon't worry about getting nailed for calling someone on the Do-Not-Call list." I hear that 911 centers and police private numbers have been hit by this. Isn't technology wonderful. One idiot can make millions mad and scam thousands with very little effort.

I just received a phone call from 4070003131 on my home phone over lunch, and picked it up as we are getting many phone calls from our credit card companies who will not stop calling unless we yell at them.  I got the recorded message asking me to press 9 to speak to an operator about lowering my APR.  I pressed 9 to see who would answer, got a very polite and official sounding gentleman so I played along for a little longer.  He asked several questions, including how much credit card debt do I owe, how many cards do I have, what is the highest percent interest I pay, and I gave him some general numbers.  No PII at the point (Pesonally Identifiable Information - I work as an IT consultant).  He then said he needed to verify that at least one of my accounts was current and asked me for the 800 number on the back of one of my cards.  It was at that point that I asked him "How do I know that I am speaking with a legitimate company right now?".  You guessed it...'click', buzz.  Hung right up on me.  Searched the number and found this site.  Scary stuff out there, everyone beware!!!