I know that the scammers just spoof their number, but a call blocker is helpful for people who continuously call from the same number. Digitone is good(has first ring suppression)...Panasonic cordless has a model that will block 250 numbers...
*** BEWARE *** Technical Scam Call *** BEWARE *** This scam uses a spoofed telephone number. Caller is calling from a "Boilerroom" to inform potential customer that they are Windows Support and your computer has reported viruses to their database. After a very round about conversation, they want to charge $169 to resolve your issue. The scam is that they want you to buy a subpar AV package, fraudulent 1-year tech support and give them access to your computer. Additionally, if you fall for the scam, you provide ripe information for identity and credit fraud by providing a credit number. He says Microsoft provided the information, but Microsoft does not provide this type of information to third-party vendors and has confirmed that this scam exists.