Vodafone India — converting from postpaid to prepaid

Address:

Chandrapur, Maharashtra, 442404

I had visited a vodafone mini store in my locality to convert my post paid connection to pre paid. They told me to come back after paying my latest bill. As soon as the bill for january 2018 was generated on 7.2.18, i paid the bill and visited the store again. I was told to send as sms - p2p to 199.in reply i received an sms that i will be contacted within 48 hrs regarding the migration. As there was no call from vodafone i sent the sms twice again on 9.2.18. Till date there is no response.