Universities and exam portals typically collect contact details for communication purposes, such as exam updates, admission notifications, or document verification. However, if you do not wish to receive messages or calls, you can:

1. Check Privacy Policies – Review the website’s terms to see how they handle your data.

2. Opt-Out Options – Some platforms provide an option to unsubscribe from notifications.

3. Use Alternate Contact – If possible, provide an alternate email or number for non-personal use.

4. Contact Support – Reach out to the university or portal and request removal from their contact list.

Always be cautious while sharing personal details online.