[Jenn H]

First off word of mouth can have a huge impact on a local business. I know this first hand. Tell everyone you know about what happened. Before you realize it your info has spread like the common cold.
Who to contact in NYC regarding bad business practices:
NYC.gov consumer assistance
Attorney General
BBB New York
FTC Bureau of Consumer Protection

Don’t forget about your local media. That can also be a powerful tool to get the word out.

Have you contacted Stella & Chewy’s? They would probably want to know that someone is selling their recalled food. It doesn’t make them look good if dogs get sick again. And they may also be willing to refund you.