These guys are relentless.  What do they hope to gain by not answering/responding?  At least breathe heavily or speak in a thick foreign accent or something!  What a waste of time.  They have called me countless time over the past few weeks.  I'm about to blow a whistle into the phone.  

More calls from more do***ebags.

New number calling, havent picked up to see what scam it is this time. If I find any more info I will comment again.