To avoid unwanted telemarketing calls on your Vodafone Mobile phones, register your Vodafone number in the NDNC Registry. To register, Call 1909 (toll tree) or sms START DND on 1909 (toll free). And in case you want to de-register yourself from the NDNC registry sms STOP DND to 1909 (toll free).
Requests will become effective in 45 days from the date of request.
You can also register online at Vodafone DND.