Block a spcific number

The BT4000 can block calls from certain call types, e.g. international calls or from specific numbers to
help prevent nuisance calls. You can store up to 10
specific blocked numbers. It has a very limited blocked number space. There is no way to increase blocked number space. Perhaps a newer phone with 300 to 1000 blocked number space.

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

The most effective way of dealing with such matters is to use a call blocking app like LEO Privacy. You will never receive them again.
LEO Privacy Applock Hide Safe Android Apps on Google Play

when you hang up go into call logs, then long press on the number you want to block and select "add to reject list"

sorry that you have top pay for what is already in your user manual for free
Of you have a problem understanding the instruction take it and the instructions to a phone shop and ask some one to do it

Get Comcast we have a star feature that allows you to block numbers

Can no be done. Iphone doesn't have a 'black list' for phone numbers

Hi, on this make and model it is not possible to set up call barring the phone has not got the software to do this, some newer phones can offer this feature but most dont.
the only chance you have got of getting a number barred is by calling your service provider and tell them you keep getting nuisance calls from the number you want banned and tell them to block all calls from this person.

as your phone does not have the software for call barring then this is the only way of blocking a number, you need to call your service provider as they can block it for you, but you need to tell them its a nuisance caller and you want them barred from calling your number.

hope that is some help to you