Robocalls

File complaints with the FCC, FTC and your State attorney general.

As mentioned above, you can use the Silence Unknown Callers feature built into the phone.

Robocalls are an ever increasing problem.

Until the carriers are forced to do something about it under penalty of law, it's not going to get better.

This is not something Apple has control over.

Report to the FTC - Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support.

You can block it on your iPhone if you wanted too because I had robo callers every day and nights too and I block it. More robo callers continue to call my telephone number again and it was driving me crazy too. I called my phone service and the women refused to give me a new telephone number so I went to my police station to talk to a officer and he said, that he can't do anything about it and you have to call your iPhone service provider which I did and mention police then instantly I had a new telephone number and no robo callers or spam callers now with my new telephone number. I'm very happy now.

You can reduce the annoyance by enabling Settings>Phone>Silence unknown callers. That will send any calls from anyone not in your contacts or from numbers you have not placed a call to directly to voice mail.

I started getting them yesterday. 19 in 2 hours.

Each from a different number in Arizona. I blocked each number, but the subsequent calls came from different numbers. Each call left the same message that the original poster mentioned above, and to call back the 208 number.

They just started again today. I've gotten 3 in the past 10 minutes. Again, all from Arizona.