I had a domestic Canadian flight this Thursday, and yesterday they told me they delayed the return flight 10+ hours "due to unexpected business or operational constraints".

I requested a full refund. From their language, can I assume this delay was under their control and I'm entitled to $400 in compensation (per APPR)?
I went to http://www.aircanada.com/customerrelations and the "check my eligibility" form, but they can't find my ticket. Should I wait a bit before escalating?

Thanks