That's rough, but calm weather doesn't always let the tent off the hook. Sometimes a pole can get a tiny flaw from the factory or even get stressed during setup. Seen it happen with good brands too. A temp fix is a splint from a stick and some heavy duty tape, but you'll want a full pole section replacement. For brands, look at the ones with real lifetime warranties, they build them different.
Disagree on the factory flaw idea. Most pole breaks I've seen come from user error, like forcing a section during setup or not lining up the ferrules right. People blame the gear when they're tired or in a hurry. A real lifetime warranty is great, but it won't save you from a bad pitch in the dark. What's the last tent you actually saw fail from a hidden flaw?