[alephnerd]

There is regulation for this in India (eg. Each call center needs to be licensed, needs an actual registered owner/point of contact, etc) but if you are doing this with political cover you might be protected. For example, if I am running a scam call center in Kolkata, I'd need to pay off the political party that controls that state - the TMC. And similar stuff happens in other states among all parties.

That said, scam calling is a uniquely large industry in Bihar and West Bengal as neither have a significant tech industry, and see very little foreign investment, so there is less incentive for state politicians to crack down on something that generates easy money. Most BPO and Software outsourcing companies in Kolkata and Patna tend to be the old school Indian outsourcing companies that got priced out of Bangalore/Gurgaon/Hyderabad/Pune because they have low margins, and thus pay lower salaries (around $3-7k a year compared to $20-70k a year in Tier 1 cities or product driven companies)