Airtel — Money taken by installation team 5 days ago and no response further

I, S.Radhakrishna, have paid for airtel broadband installation an amount of Rs.2828 on 06/10/2020, they have approached me after 4 days of booking the request. Now after taking the money and all my aadhar details and copy, there is no response from him .Everyday whenever I call him he used to say that he will come tomorrow and tomorrow, but that tomorrow has never come.Now today he is saying that installation can't be done, when I asked him for proper communication and refund he said go and complaint to anyone. His contact number is [protected]. For collection of money when they speak well versed and we ask for our rightful service they are not even responding. One issue is the way they are behaving and the second is I want my money back immediately.My contact number is [protected] .