My usual telemarketers recently started changing numbers almost every call because I have a good online blocking service which declined this call after 1 ring. These blockers are the only hope if telescum changes numbers every call, as they block calls from numbers reported by others before they attempt to call you. If the telescum persists, I block the number at ISP level for no rings, but this list is limited to 25 numbers. Lately half of the calls claim to be microsoft calling from a different city, state (also used as callerID) every day! Luckily this crew is so stupid as they call so much no one is be fooled, just annjoyed. Report calls to spare others and shut down abusive telemarketers.
Extremely annoying callers. They have called here at least seven times per day for over a week. If you don't answer they hang up. If you do answer, the person on the other end speaks in a thick foreign accent trying to tell me that my computer was hacked and I need to buy their Spyware software to clean it up. Told them "no" and they are still calling. Phone ID will display Davis CA on it but I am fairly certain these people are not from California. Reporting to the FCC for harassment.