Airtel — about network issue at my billing address

Address: New Delhi, Delhi, 110059

Website: www.airtel.in

My service request no. Is 75017678 of 25 march 2017 as it is on hold from that day to till today. I contacted nodal and appellate team. But there is no resolution for my complaint. I am unable to use proper network coverage at my billing address which refers to calls drops and unable to use internet service also. I have a pospaid connection. Every time airtel contacted me and they say 'network enhancement involves clearance and approvals from local authorities and owing to some external factors it may not be possible to provide you a specific time frame for resolving your specific concern'. Today is 26 august 2017 and its about 155 days but there is no resolution. Kindly process my complaint and provide me proper network coverage at my billing address at any cost.