On Phone Spyware :
India has a very large "spy someone's phone" industry. With custom spyware apps built for android phones, where one pays a monthly subscription of Rs. 1000 to 2000/=. A large income.
BD's thousands of "secret phone records exposed by unnamed" recent incidents point to this side. Spyware being installed on Android phones.
To keep safe use an old styled dumb button phone. Other three lettered acronymed government agencies also record your calls, but those generally don't spill off to "unnamed nobody" for you to blackmail or expose you on facebook.
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News link
https://restofworld.org/2020/all-the-data-fit-to-sell/