Airtel — Reg my broadband connection

I requested for broadband connection through app and a executive contacted me. Took all documents and did registration and took rs 2828 on Oct 26 2020. Now it's past 10 days. At first the executive kept stalling me that installation will be done in 2 days and now he isn't picking my calls or replying to my messages. I went to a Airtel store near me.. they gave me the no of technical head of raipur for further communication and now the technical head isn't picking calls.