The essential difference here is the committee not needing to hold a meeting and not being legally required to do so.
My question, which might have to wait until your next AGM, is why people are being elected to the committee when they have no intention of holding meetings?
I would be seriously tempted in your case to start agitating for more transparency from the committee about the decisions that are being made (or not) without the committee even discussing them.
If they are discussing them, they should be holding formal meetings.
Maybe you need to start a newsletter, asking for support leading up to the next AGM.