Originally Posted by V1213

I assume that the Twitter agent was confused and thought you were travelling in Economy. Since WestJet brands their better-than-economy class as just "Premium", terms like "premium economy" could confuse them?

The WestJet website should be correct, even to the point that westjet.com/menu is meant to be used for information while you're in-flight.
Both of your flights are over 2.5 hours so, as per the WestJet Inflight food and beverages page, the full meal service described at westjet.com/menu on your day of travel should be provided.