This is the most common result. An individual or bot will chat with you, send a few generic photos, and then demand a "booking fee" or a mobile reload (Dialog/Mobitel/Hutch) before meeting. Once the money is sent, the user is immediately blocked.
It is crucial to understand the implications of engaging with these numbers in Sri Lanka: sri lanka badu whatsapp number work
Some "WhatsApp work" links are designed to capture your phone number and personal details to sell to telemarketing firms or for more sophisticated phishing attacks. Legal and Privacy Risks This is the most common result