There is a pattern to every disruptive service. I remember, I was one of the very few privileged who got the Jio preview when no one heard about it, speeds were incredible. On Band 40 I was getting a minimum 12-13MB/s symmetric when the tower was no where near my residence. Eventually, speeds got shit and now it's less than turtle. There was a great article in ET titled, India riding on 4G lanes at 3G speeds.
The same cycle seems to be repeating now in case of Excitel.