Airtel — payment refund about broadband

Address:

560034

I am karthik from bangalore. On 23rd of march 2018 i had made a payment of rs 4838 for a 6 months plan in broadband. The next day i was informed about no feasibility in my lane by the technician and was told that i would receive the refund but it's been a month and i haven't received the refund. I have been continuously calling the customer care but i didn't get any response from them.