Excitel — Excitel Broadband Pvt. Ltd. not providing internet not refunding

Address:

48, Okhla Industrial Estate Phase III, South Delhi – 110020, India

I have no internet connectivity for last 4 days. When I complaint, the customer care people say that there is technical issue in your area and team is working to resolve it as soon as possible. But nothing happened.
I have paid 9 months advance for my net plan and now when I am asking for refund excitel straight forward refused that the prepaid amount cant be refunded. Now i am not getting services, nor I am getting refund.
My customer id is [protected]
Name Gajendra Bisht