They are careless about payment and has made my debit card use twice for a single bill. They have not taken any initiative to refund.
It used to be airtels own store but now its a franchise store of airtel. So if you are looking to upgrade your 2g airtel to 4g, you will be charged Rs. 50 unlike the free service provided for the same at airtels own store.
Customer relationship center for airtel.
Bad service
Good
Available