Plan increased without notice

I am a current subscriber with eight lines on my account. My most recent bill had all but one of the plans increased by five dollars per month. There was no advance notice. I have read through my previous bill - all 24 pages of it I cannot find this notification anywhere. I’m very disappointed because we spend lot of money with TELUS each month yet if I’m a new subscriber, I can get a better plan for much less than the loyal customers