2 GST certificate of one person

mahendra sahoo (Gst Practicion) (700 Points)

02 October 2017  
Before gst we had SERVICE tax registered
But we had surrender it on online, but hard copy not sent to dep't. After came gst we applied new gst certificate, when I search through my pan card basis in gst site, it showing 2 gst no.
I want to continue my applied gst no. I don't need migrated gst. Also migrated gst we don't have user ID and password, so we need to cancel it, what I will do?