I called CIC many times actually, both within the 6 month average processing time and beyond. The last time I called CIC enquiring about why my case is still in progress while many Jan PNP applicant had received their PPRs is on July 21st (Friday). The difference that agent made is that she helped me to put up a note to the visa officer that saying my case has well passed the average processing time. The rest is the same, everything is passed and just wait for the final verifications. I got my PPR the next business day on July 24th (Monday). So time wise, I think give them a call and told them to put up a note for u really helps (If your application has already passed 6 month). About the additional verification thing they told U, I have no idea if that is the same as final verification in my case. I thing You really should call them again.