Vodafone India — My MDN_[protected] is not working

Address:

New Delhi, Delhi, 110059

This is to inform you that I requested for circle change (Vodafone Kolkata to Vodafone Delhi) of my MDN [protected] on 27th May 2017 but after that I received message "' Hello! Your Porting Request VK172461 dated 31May17 has been approved by your current operator. We will communicate the porting date and time shortly." But on 31st May my sim suddenly stopped working and when I changed the sim with new one my number not started. Getting error of No Service.
My number is not working and it is huge loss for me and i have only on MDN which is very important for me.
Worst service experience I got from Vodafone which is unexpected.
Please look into the matter ASAP.
Still they are not responding me.