Samsung galaxy S21 Ultra, is blocking the number of my (useless) energy provider so I can't sort out issues with my account. My phone does not ring, and I am notified of a voicemail to then see that a "fraudulent number" has tried to contact me in my call history. How do we add the numbers to a safe list? When I click the number it asks about calendar permissions. Really very annoying for an already annoyed individual!