1
Go to your Business Settings Page
2
Choose the Facebook Business account (1)
3
Click on WhatsApp Accounts (2) under the Accounts section
4
Choose the WhatsApp account (3)
5
Select Settings (4) then WhatsApp Manager (5)

6
Click on Phone Numbers (1) under Account Tools

7
Press the Delete icon next to the phone number you want to delete.

8
Then click on Next


