Zomato — cheating the customers

I made an order in dominos as in the app it was stated that 50% of[censored]p to 100. I placed the order by applying the promo.. Every thing was good.. But while checking out, the original amount was deducted. After the payment i was shocked to see that even though promo code was applied, the amount was showing as the original amount (Great trick to deceive the customers). I contacted the customer care.. But no proper response.. They asked me to contact dominos.. When i contacted dominos they asked to contact zomato.. It was clearly evident that they are not ready to solve the problem instead making me wandering.. Again i contacted zomato customer care and now they started replying lethargically.. Like whatever u do its not going to affect us.. We are not going to solve it.. So for the people out there.. I[censored] pay and ordered something.. Even if it is not delivered no one is going to take the responsibility.. Beware!!