Delete Whatsapp Official Number
Log in to your Meta Developer account (https://developers.facebook.com/apps) and click on the Apps section.
Click on the app where you registered the official WhatsApp account, as shown in the image below.
Click on WhatsApp and select API Setup.
Click on Go to WhatsApp Manager.
Click on the app name (as an example in the image below, it says Kuasa Support) located in the Phone Number section.
Press the delete button as shown in the image.
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