You can block a number on your phone so that a person or company can't call or text you from a particular number. Here's how ...
You can block or unblock a number on an Android phone using the built-in Phone app's "Blocked numbers" menu.
We've all received a call or text from a number we don't recognize. But beyond the occasional wrong number or pocket-dial situation, many of these are spam calls that fortunately can be stopped.