Movie Voucher Fraud

Hi, these days paytm giving an offers where you guys can get movie vouchers with purchase so i also purchased. After 3-4 email i got voucher on e-mail (2-3 month later after delivery of product).

Now i tried to book movie online via paytm it shows ‘this code is applicable on travels’ than i tried to book a flight now error is new ’this code is already used.

If they cant give the right voucher.why they are committing to costumers.