I am receiving calls from the 647-294-xxxx. the last 4 digits change but the nature of the calls do not. No messages are left and when you call back,(i did this just once) an automatic answering system asks that you leave a message or your phone number and it does not identify who they are. I will continue to block all numbers who do not leave a message. I do not answer calls who do not identify themselves in my call display.