Check your home phone provider’s call-blocking options
Use your phone’s built-in call-blocking or call-reject feature
Add unwanted numbers to your blocked list
Enable anonymous call rejection if available
Register your number with the national Do Not Call list
Contact your provider to block specific area codes or number ranges
Install a call-blocking device or filter on your landline
Use a caller ID service to screen incoming calls
Silence or send unknown callers to voicemail if your phone supports it
Report persistent harassing calls to your phone provider and local authorities