India has come a long way in terms of telecom service development. Nowadays, telecom services are majorly used for the purposes like advertising, marketing, and direct sales in order to reach out to the prospective customers. The commercial organizations track customers and convey their information to them through calls and messages, which they send on the customer’s mobile. The phenomenon of calling customers and informing them about the services and products is called telemarketing, which is too famous these days.

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