They have different plans for different cities I guess. I am on ₹499 plans with 79 GB data at 8 mbps in Bangalore. This month I exceeded the limit and getting 1 mbps speed. I am happy with that because I am able to make Skype video calls and Webex meetings without any issues.
Earlier I was on 40mbps plan and it was inconsistent. Many times it used to drop below 0.5mbps and I moved out for a year. This year tried again as I need a landline after initial issues, now it's stable. Touch wood.
To get unpublished plans, better to call helpdesk.