LittleApp — little app is selling fake dominos vouchers

Address:

Mohali, Punjab, 160059

I recently bought e-voucher for domino's outlet from little app. When i tried to use it at domino's website, there was no option to use it. When asked domino's customer care about it, they said they don't support e-vouchers anymore.
Little app is clearly selling fake e-vouchers to the customers and these vouchers are non cancelable.
I want my money back.