Hi,Looks like what you received is AOR. Did you create tracker account(https://tracker-suivi.apps.cic.gc.ca/) using your application no?
For call try this - https://www.canadavisa.com/canada-immigration-discussion-board/posts/10523591/
Yes, I did create my tracker account using my UCI & App No as instructed in the email. I got an email with an attachment which reads:
Subject: APPLICATION FOR CANADIAN CITIZENSHIP
UCI: XXXXXXXXXX
Application: XXXXXXX
This is to acknowledge receipt of your application for Canadian Citizenship. We will review your application and supporting documents and will contact you if additional information is required.