Vodafone India — not able to send sms to any number

I am not able to send sms from my newly purchased 4g sim to any number. The vendor had recharged my mobile no [protected] for rs.349 (Unlimited calling and 28 gb 4g/3g data).
Thinking that the recharge done by vendor must not have covered sms facility, i further recharged the mobile for sms pack for rs.15 through vodafone website.
However, i am still not able to send any sms. I tried calling vodafone care at 199 but ivr says my number is not a valid vodafone number and the call gets disconnected.