Zomato - Zomato Restaurant Promo code offer Cheating

My father is running a restaurant and it is partnered with Zomato. The person from Zomato came and approached my father for **% promo code offer for *-** days and he also misguided my father that in that **% discount zomato will bare **% of our loss and this offer will be for just *-** days. My father accepted for the promo code offer and they ran the offer.
But later we came to know that zomato's offer is running beyond ** days and also came to know that zomato doesnt provide **% of our loss.
We immediately contacted the responsible person he at first refused that the offer will give loss to us later after showing the proof he accepted that there is loss and we asked to stop it but he refused to stop the promo code offer even after ** days and told that this offer will continue for next ** days and he also tells that this cannot be stopped and also threatened that if he stops the offer now the restaurant will receive * orders for the next ** days which is very cheap tactics and we dint expect this from well known company like Zomato.

The offer period intimated to us was just *-** days but it still continuing more that ** days.

Due to this misguiding and cheating promo code offer we lost approximately around ****.

Please take immediate action and give a better judgement so that further zomato cannot exploit any other non technically intelligent innocent restaurant owners around the country.
Thank you.