We started getting these calls yesterday, but from the number 702 999-1234 that shows it's in NV. We got them in the middle of the night (3:30 AM) and I even had one on my support line at work that is not even a person. In my case when you answered you get a recorded massage that your MasterCard has been locked press 1 to talk to a support center.
Every phone number in this town is getting the calls, even numbers that are not people, business, my support line etc. I also got one last week with a guy saying he was from Microsoft and wanted me to get on my computer and give him the MAC address. These are all scams I am sure but I hope the early morning phone calls ens soon...
Mike