how to block phone numbers from texts on iphone 11

Diane1349 wrote:

Receiving many texts each day from different phone numbers, message is the same. I'd like to block them on my iPhone 11. There is no 'add' button that I can find to input these numbers. Considering this is spam I may never get it to stop. If so how do I determine what info they have of mine that they're sending this to? Thanks

You open the message - at the top where you see the phone number click > then info - where you see the phone number click on this > then scroll down to block caller.