Swiggy — Liar customer executive Mohd. And pathetic service by Swiggy

I have given one order for 1 Veg biryani from Biryani Blues through Swiggy. I have received the order more than one hour late and the food was completely cold. Mr Mohd. From customer executive team told me he will give me coupon of 75 rs as compensation and i confirmed the same. The next second he started saying they cannot do that please write a mail. Do you think customers are fool? Its not about 75 rs coupon it shows Swiggy is a fraud and filled with liars bunch of customer executive. I want to complaint against Mr. Mohd for being a cheap liar throughout the entire conversation.