if they are using DPI like in the case of Jio, RailWire and BSNL you might want to try SadeghHayeri/GreenTunnel
Just npm install the package and gt. Voilà, every blocked site is now accessible like web.telgram.org, -- link removed -- and all.
They have gui and packages for debian, windows and macos
I noticed same thing on normal excitel broadband when they had 20mbps,50mbps,100mbps plans but since i moved to fiber (300mbps) , all websites loads fine and even -- pron site mention removed -- and that too wit porn h u b . com domain aswell.