I also just got a call from this number yet I did not pick up since I do not know this number. When I tried to call back (not even knowing why) and I was told by the system that this call is not possible I seached via Google and found this page.
After they tried sometimes with known number 004189203045 without success (first time I tried to call back - no chance - I then found a similar website via Google), they called me today with 003708920304. (Do they think we are dumb???)
I told them some "nice" words and hung up.
I won't answer any calls anymore from numbers I do not know. I think that is probably the only way to stop this retarded idiots...
I also just got a call from this number yet I did not pick up since I do not know this number. When I tried to call back (not even knowing why) and I was told by the system that this call is not possible I seached via Google and found this page.