How to record an incoming number I want blocked

Android:

• From the call log, you can disable incoming calls from specific numbers.
• Select the number you want to block, then hit More or the 3-dot menu icon in the upper right corner and choose to Add to reject list.
• This will disable incoming calls from specific numbers.

iPhone:

1. To block someone already added to your iPhone's Contacts, go to Settings > Phone > Call Blocking and Identification > Block Contact.
2. To block a number that isn't saved as a contact in your phone, go to the Phone app > Recents.
3. Click the exclamation mark next to the number.
4. Scroll to the bottom and select Block this Caller.

The video for Android:

The video for iPhone (couldn't find a more updated vid):
And, finally, here's the source article for Android: Block Numbers And Texts ' Block Someone On Android

For iOS: https://www.popsugar.com/tech/How-Block-Number-iPhone-31863584

Some phone services offer protection from nuisance calls. Spectrum has in play a system where you just get one ring from such callers and their number does not even appear in calls missed. But you have to activate the service by calling them. You can request the caller put you on a do not call list but that doesn't stop other nuisance callers.

https://www.fcc.gov/consumers/guides/stop-unwanted-calls-and-texts

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How to Get Rid of Unwanted Calls on Your Cell Phone

https://lifehacker.com/im-a-telemarketer-heres-how-to-get-rid-of-me-1540911401

block or notify authorities if not just nuisance

Only if you have that future, if not call your local provider and ask for call blocking.

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Most of the telecom service providers offer call blocking features. In addition to this, most of the vtech cordless phone sets have built-in features through which you can block incoming calls from a specific number.

1. • Create a "Call Block List" on the vtech phone and store the Caller ID information of unwanted callers in the list. The numbers you feed in the block list will get a busy signal every time they try to call you.
     
   • Ring up the customer service of the telecom company that is providing you the phone service. Tell the representative that you want to get your incoming calls blocked from a specific number. The company will then add that number to a list of blocked numbers for your particular phone number. In the future, every time an unwanted caller tries to ring you up, he will hear a recording saying the number has been blocked.
     
   • Visit the website donotcall.gov. Add your phone number to the website's list of phone numbers that cannot be reached by telemarketers and businesses.
     

You might have also to get the assistance of the service provider to bar an incoming number. Menu - setttings- call divert or call baring. use the incoming numberr and set.
Bu the best way to solve is to make a complaint to the service provider about this nuisance and also one to the local police- cyber wing.
Your caller can be warned which is better than you barring the caller

Yes. You simply ring your service provider and ask them to block, that particular callers number, and you will never be bothered again. You may have to indicate why you wish this done, however unless asked, you don't need to elaborate, unless you want to.

ring your phone company they will tell you how

With this model of phone you cannot block calls from a particular number but you can restrict incoming calls that are not listed your address book. So effectively you can block a caller but you will be blocking all callers that are not in your address book. Having said that, there are other phone models in the market that can block a particular caller by listing the number in a black list.