While it is cheapest there are many shady things that are going on. For example both Jio and BSNL automatically throttle your speed for porn and many other websites. BSNL outright bans the porn websites.
The entire company is run by morons.
Another thing Reliance has done with me in past is to sell my billing data to a fake debt collection agency.
But that is poor logic. My guess is 90% internet surfing is waste of time and energy. So..