People are calling just because of pure impatience and panic, which is natural of course. They get some reply and it gives them peace of mind.
In earlier groups people used to call less as they mostly waited for average timelines. The June/July group has gone real impatient due to some candidates being issued quick PPRs and hence everyone wants some update, so people trying different ways to extract some information from CIC. Its just how our human mind works. Patience is a rare virtue.
Now to your question, I assume from your timeline that your file is at Ottawa office, which indicates most likely it is approved. 15 days in IP2 is normal, so no worries here. Also CIC is issuing PPRs a bit late even to approved applications these days, taking 30 days also from IP2, nothing to worry here it is the new norm now. I suggest you do not call them before 20 days in IP2. You are at a good stage, why bother them unnecessarily.
Application is going great my friend, enjoy this moment, your golden e-mail is arriving for sure, take my word for it
