Airtel — delay in shifting of broadband connection

I am your permanent customer since last 10 years & is facing rude behaviour from your cc staff. I had made a request on 13/5/18 for shifting of my broadband connection from delhi to noida with landline no.[protected].
I was told by cc staff that it will take 3 to 5 days & on thursday i received a call that we are coming for fitting the lines. As it was very unexpected but then only i tried to reach home at the fixed time. Due to traffic jam i got delayed & the person left the site.
When i called him, he told that next day someone will come. But after that no one turned up.
When i called cc they told that all the slots of your area is full & we will not able to provide you connection in that area.
Now what should i do?
I am your 10 year old customer.
Should i shift to some other service provider?
I am withiut wifi since last 8 days.
My son is in usa & i have to call daily to my son.
This is enough for my connection or should i knock the door of higher authority.

Regards
Gurmeet singh
A-39, ff
Sector-20, noida
[protected]