Calling them without application number might be bit tough to get any information, they might give generic response oh we are working on such and such date applications etc.I'm in the same situation. Sent our application April 19th and was recieved April 21st..and we are STILL waiting for our AOR. From what I have been reading from this forum April applications are kinda backlogged. I guess just be patient I know it can take 4-6 weeks to get an AOR...but with CIC you never know. You can always call to see if you can get some sort of update.
Even with an application number it is hard to get hold of anyone that actually will help you .