The Hindu — cancelled my newspaper subscription but didn't receive refund

Address: Nalgonda, Andhra Pradesh, 508001

I had cancelled my subscription and requested refund few months back. They customer service team keep saying that there will be a call back from hindu and refund will come in 2 weeks. But nothing had happened. I have requested many times. I have sent my account details also to customer care email. But still no response. Always they say, we will get back in 2 days. I have subscribed in online. I think it is better to go thru local agent that online.
My registered mobile number is [protected]