How can I block texts and calls from particular nuisance callers/texters?

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

http://tag.wonderhowto.com/block-calls-iphone/

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

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.

its because you need to go to "voice commands", then go to "call alert" & "then press ring only"

If this is a nuisance caller contact your service provider. They will block the call for you.

ring your phone company they will tell you how

The caller has caller ID block placed on their acct/ this can interfere with sending sms messages to a phone that does not accept sms or voice calls from a line with caller id block/ I had cust resprond to a text with send new to area code plus 10 digit number/ success/ removed caller id block from service and had cust click *star 67 then area code plus 10 digit number/ if you choose to have your contacts entered with *82 area code plus 10 digit cell number you will get error 00107/ can not receive or respont to blocked calls particularly long distance/resolves iss/ I am a technical suport agent for sprint/ Happy Texting

go into call settings then common settings then call reject. I have given my unwanted number a group name and then blocked that group! Hope it works.There is also a service security thing in messaging which lets you set up trusted and untrusted lists. I am trying this also.