Airtel — Broadband connection not provided

I have applied for new broadband connection on 20th April 2021, at that a representative from Airtel called me and told that connection is available in your area, will provide installation with in 24 hours and asked me to make the payment first, I made payment for 6 months plan. On the same day evening I got message that they are facing some issue so it will take 72 hours. But today as on April 24 2021 still I did not get any call from Airtel. So I called to airtel customer care but the answer I got was not all satisifactory. Now they are saying some technical terms which I cant understand and it will take more than 48 hours without any specification of maximum time. It means it can take 48 hours or 100 hours or even more. What kind of a customer service they are providing very worse of its kind.