Airtel — About new broadband fiber connection

I booked new broadband fiber connection on 15th june 2020. After that i got a call on 3-4 july 2020. And all process like 3 months adv payment, wire line & modem they installed. For that 4-5 people came. Now today's 15 july 2020, but my connection is not activated. Since last 10 days i had 5-6 complaints and its showing and saying like it will be resolved in next 24hrs. Before this i'm not using any airtel services, first time i chose airtel. See to new customers they are treating like this than i'm thinking abt future. And from last 2 days i seen brouchers for same connection plans on my area as well as my home also. Airtel is doing advertisement. Finally i compliment yesterday to remove all these things and give me money back, so they told it will refund on next 7 days. But today i got again 2 msgs like engineer will come nxt 24 hrs, so now i'm frustrated. Atleast they should tell me the reason.

I will never ever use airtel in my life, my offc performance decreasing bcz of internet issues. Worst services from airtel.