Note: WhatsApp cannot delete your account for you at this time
OK. This is a strange one. To delete your WhatsApp account seems straight forward:
Go to Settings > Account > Delete My Account.
Enter your full phone number and tap Delete My Account.
That's it. This should be the point where you get a hug — but. WhatsApp have a strange message on their support pages that says Note: We cannot delete your account for you at this time 🤔
We can't figure out if this is just confusing content—for example, they can't delete accounts on the user's behalf—or if they actually can't delete accounts. We're trying to find out more. Will update soon.