Yes, you can reach Zerodha support from an unregistered number. When you call from an unregistered number, the system will request you to enter your registered mobile number followed by your support code.
Example:
- Unregistered number: 998XXX655
- Registered number: 998XXX666
- Support code: 0007
- You need to enter: 998XXX6660007
The Interactive Voice Response (IVR) will request you to enter the registered mobile number followed by the support code.