Not perfect sim. Review on Airtel Mobile Operator

I like the network range of bharti airtel. since last 3 months I am using airtel sim and I got very good results in terms of network.airtel network is very powerful in roming also. last month I had go in tirupati there is also available the network of airtel. our group having a corporate plan of airtel so group calling is free for us and our plan is very good in 199 rs we get 700 local minutes and 500mb 2G data is very good plan which they provide me. the net speed is very good rather I am using 2G network. I am using postpaid service they provide me 1500 rs credit limit. they provide there airtel money app which give me 10% discount on electricity bill. they also show where were there network is available.in last month I am very distrub there promotional calls ihad complate that in there customer care then the all call are stop in only one week. I am totally satisfied with there sevice. network wise airtel is no one.