Normally I send any calls on my landline straight to voicemail, knowing they are probably spam. Unfortunately my landlord put in a new doorbell system in our apartment building, which calls a phone to get access. I linked it to my landline so that my wife, and son, and I could all answer. But now that the phone rings through we ere subjected to spam calls again.
Is there a way to send all calls except those from one specific number to voicemail?