Have you tried calling 1-800-425-5430 helpline which manages complaints in Tamil Nadu against errant auto drivers. It is a toll-free number managed by State Transport Authority (Government of Tamil Nadu). Calling this number from Vodafone gives the response as ‘You may not make calls to the dialled number from this telephone’.
V&R has reported this issue to DoT/TRAI (via PgPortal) and also to Vodafone Social Media (via Twitter)
So if you need to call ASK Helpline meanwhile you may need an alternate cellphone network or a landline to call the same.