LittleApp — i purchased few vouchers from little, app which merchant is not accepting

Address:	Gautam Buddh Nagar, Uttar Pradesh, 201301
Website:	littleapp.in

I have purchased 2 dominos vouchers worth 2000 from littleapp...
Littleapp and dominos, both are saying due to some techno operational issue voucher service is not active since 25 days...
Voucher are expiring in two days...
Both are saying they cant do anything.
Little app also knows the issue... Still they are saying let vouchers expire but they cant do anything...