Airtel is worst mobile operator company.I am using airtel from 2years and in my area there is no 3G till now, I tried contacting them for several times for the same but till not got problem solve, Every time they reply saying please wait for few days and then no answer, The connectivity is poor, customer service is poor you have to wait for around 20 minutes to attend your call and then they start giving excuses, So on my behalf i’ll recommend everyone to not use their service and if your using airtel then port number to other operator like jio etc.
I have attached screen shot for showing the poor connectivity of airtel.