christine_21 Hey there
Hopefully this will help...
Create a new contact, you may name this new contact “No Caller ID”. Here is how:
Launch the Phone app
tap the + button
As phone number, enter 00000000000 (that's 11 Zero's)
Now scroll down and tap Block this caller. A popup will appear saying “you will not receive phone calls, messages or FaceTime from people on the block list” then tap Block Contact.