Airtel — Fake bill generated

Airtel is the worst service provider in India, they won't resolve any sort of requests raised by customers, I've took fiber connection, and due to the issues I've stopped using their services in July after that they kept on generating bills even after speaking with them several times I've spoke with a superior gautami of airtel, she's the worst member and her team, communicating to customers, totally 8 thousand rupees I've paid to airtel for not using their services,
Thanks to airtel and the officers who are encouraging this kind of scams in India