bowerju wrote:
Asking him not to do it seems to encourage the childish/disruptive behavior unfortunately.
Then, unfortunately, you have problems well beyond technology.
Use Focus to temporarily block them but leave it set so that two calls within three minutes will allow them to get through to you in an emergency. If you're feeling especially adult, warn them that you will be doing this during certain times. You can also enable the feature that lets people know you are not receiving notifications.
And never, ever respond to or comment on messages with links. The childish often stop engaging in attention seeking behavior is no attention is elicited.
I wish you all the best of luck.