Word of mouth will either sink a business or boost it - and you guys just earned yourself a trip to the bottom.
Pro-tip: In the food service industry, if a product is unsatisfactory to a paid customer FOR ANY REASON, you replace the defective item OR you provide a full refund. To deny this industry-wide standard once is bad enough, but to have a member of "management" double down on it is UNCONSCIONABLE.
We will tell everyone we know. We know a LOT of people. You owe Mr. Delgado a public apology and a refund, AT THE VERY LEAST.