Automated Calls Regarding my iCloud

They are scams. The phone numbers that are displayed are easily spoofed and don't usually show the number(s) actually originating the calls. Also see: Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams - Apple Support

You can also check with your cellular provider to see what blocking options they offer. The problem however is that the scammers keep changing the number they use and blocking often isn't very effective.

You can block unwanted calls see this article https://support.apple.com/en-in/HT201229

Also its your choice to add a new trusted number in appleid.apple.com it could be your family member mobile or a landline by signing in appleid.apple.com with the Apple ID and password used in an iPhone , this will stop unwanted calls .