Airtel — Bad slacking and very poor service

Airtel would never be my choice again for the way their services are. I have 499 INR/month of 6 month of Airtel broadband plan. Which I have paid for in advance. Yet it's never been a satisfactory resolution by Airtel and their team. Previously they changed wiring about 3-4 times on our residence premises. Yesterday, the engineer stated that the internet would return in one hour. After an hour since it didn't come, I tried calling him. No response. I tried reaching out to them this morning. No response. My cousin went to the Airtel store and the department head talked with him assuring him that the issue would be resolved by today 6 PM. Yet, no one has come. When called by a different number the Engineer started making excuses claiming because of the landline this may happen and whatnot. I am sick and tired of their slacking work, their wiring is always so pathetic a mere rain breaks it down. It's so frustrating to the point that they do not seem to even care. They are happy to advertise that they are the best in broadband and yet they do this to their customers.