Domino's Pizza — voucher expiration after it was renewed and no response (very bad)

Address:

500059

Hello,
1) i bought couple of vouchers from littleapp, and soon found out
Dominos website has no option to use it, upon contacting dominos customer care. They informed that they are fixing the website to accept vouchers and informed that my voucher expire date is extended to 31st march.

2) after few months they fixed their website to avail voucher redemption option in their website, so i tried availing and to my surprise i was greeted with "your vouchers are expired" message

3) i contacted dominos again, 10-15 emails with no reply, they don't reply. And atlast once they did reply saying my vouchers expired on 6th feb (Again surprised) and asked me to contact little app for refund.

4) now littleapps customer says contact dominos for expired vouchers.

5) dominos does not even care about their customers

I hope i can get a contact of their higher authorities to show them how pathetic is their service.

They are