and how do i stop them?
Hi Joe. You can use call blocking apps to block these calls. If you're in the US, you can register your number to www.donotcall.gov
Note: You might receive a call from someone claiming to be from Do Not Call Registry or FTC, they will say that your number isn't registered and offer you to sign up. This is a scam, don't ever provide your personal info, just hang up the call.