How can I stop incoming calls on AN WhatsApp?

You can't completely stop incoming calls on WhatsApp, but you can manage who can call you by adjusting your privacy settings. Follow the steps provided in the guide to reject calls automatically from certain contacts.

Is there a way to block calls from unknown numbers on WhatsApp?

WhatsApp doesn't have a feature specifically for blocking calls from unknown numbers. However, you can block individual contacts or adjust your privacy settings to limit who can contact you, which can help minimize unwanted calls.

Blog - AN WhatsApp

Q: Can I decline a call on WhatsApp and send a message instead?

WhatsApp doesn't have a feature to send a pre-written text message when declining a call. However, you can manually send a message after declining the call.