Did you include an email when you sent your application? If so, I'd double check the sponsor's email as a lot of people seem to note that it went there instead of the applicants
If you didn't include an email, you won't get an AOR (according to several calls we made to the CIC, which seems to be holding true as we still have no sight of an AOR but can log into E-cas fine with no problem). It might be worth a call seeing that a few people have been able to get a case number by using their UCI or receipt number. We had no luck with the call centre, and it still isn't attached to our receipt number oddly enough, but nonetheless everything seems to be there. You might have to hold on and wait for e-cas int that case.
I'd also call them if you did include an email (others might be able to advise better than me), just in case they have the wrong email address, which you would really want to clear up. Although I'm not sure if they can do that through the call centre.