I want to use virtual numbers to avoid the spammers. There have been plenty of companies that had pseudo dodgy signup (win a chance for a dream trip to somewher

I want to use virtual numbers to avoid the spammers. There have been plenty of companies that had pseudo dodgy signup (win a chance for a dream trip to somewhere) where you had to give up your phone number (supposedly so they could call you). Lots of time I get spam calls that claim I gave permission for them to call me. So a temporary forwarding number hides me. I use my google voice number for this and it does a good job of noticing lots of spammers (but not all).