Vodafone India — tele verification not happening from abroad

Hello
I had ported my vodafone postpaid [protected] to prepaid on 12th march 12:45 pm and vodafone executive said it will be converted to prepaid within 24 to 48 hours. Next day 13th march till 10 pm my number was not converted to prepaid. I called so many times to customer care and they said there shouldn't be any issue to call televerification from abroad. I landed abroad on 14th and my prepaid activated on 15th march. As now i am not able to verify my number from abroad they said it will be deactivated within 30 days. Vodafone kindly help me to activate my number as i am here for long-term.

Regards
Gaurav