When you block a Contact/Number, they can no longer reach you. If the blocked Contact/Number attempts to call or text you, you will not receive them.
Note: The method to block a number is different if it has been added as a contact or if it is a recent number.
Contact Method:
1. Open the Dialer.
2. Locate the number you want to block in Contacts.
3. Select the Contact.
4. Press and hold the Number then select Copy to clipboard
5. Go Back to Contacts and tap the 3-Dots in the top right
6. Go to Settings > Call Blocking > ADD A NUMBER
7. Press and hold in the text box and Paste the number before selecting BLOCK
Recent Method:
1. Open the Dialer.
2. Locate the number you want to block in Recent.
3. Press and hold the Number.
4. Tap Block number.
5. Tap Block.