Airtel — airtel coverage issue

Airtel coverage is very poor and every times when i make a call it was saying as all lines are currently busy more than 3 to 4 times i have to get connected. I have lodged complaints regarding this several times to airtel customer care but they are not responding properly.

Also i have lodged a complait as my mobile internet is also very poor. Registered complaint to the appelate node and nodal wing also but none of them have give proper solutions.

Nearly i am being complainting this issue for about 3 months.

Also i have collected many datas of customers who are facing this issue.

If i didnt get the proper solution i think better to move legally