Zomato — False promise on On time Guarantee Refund

I ordered item from Meghna Foods on 18th Nov, which delivered delayed and I claimed against on time guarantee for delivery. As per that I should get 100% refund but got only 135rs. But I couldn't see that in anywhere to use in next time.
For that reason I was continuously trying to contact through help within app but the auto chatbot says your claim is done. So there is no more option to further ask or clarify my query.
Today when checked, it was saying your claim coupon already expired. If I am not able to see the amount in Zomato money/Wallet/ Coupon code section, how could I order and get the amount utilized.
Its so disappointing. Looks like its a kind of fraud Zomato is doing to escape form keeping false promise.

User email- sitakanta.[protected]@gmail.com