I am finding lately that I am having to chase my PC+ bonus on Hotel bookings, each time they say it will take 8 weeks for PC bonus to arrive when I talk to someone on the phone, when I send an email, it usually only takes a couple of days for them to realize the mistake and have the points added to my account, this also gives me a reference number so I can follow up.
Had 1 incident where they acknowledged the extra points and said they would be in my account within 24 hours, 72 hours later still not in, another follow up, for them to apologize they had a glitch and that points would be awarded that day.
All I can say, is that I take screen shots now of all my bookings, keep in a folder on the desktop and delete once all points from hotel bookings have hit my account. It's a pain, but the only way I can make sure that I am getting my bonusses.