Hindustan Times — coupons lost and want refund of money now

My father has been reading Hindustan Times from a long period now and thus he keeps buying coupons every year. But this time our coupons were lost and we wrote a mail to the ht consumer complaint department regarding the same. They replied saying that our coupons will be delivered to us again within 10 days. Even after 10 days nothing happened. So I called up the consumer complaint department and they asked me if I was continuing the newspaper and I told them that my coupons are lost and want them delivered again. I was assured that the coupons will be send soon. Even after so many follow calls, nothing has been delivered yet. In the meantime I have received many calls asking if I am still using the Hindustan times and I keep telling them that I don't have my coupons and would want them Asap. Despite reminders via mail, the consumer complaint department just keeps delaying and postponing the actual delivery of coupons. Now I no longer wish to continue HT services and frustrated with your poor services, I just want my refund of money for the coupons I had paid.
Please look into the matter urgently and do the needful.