2005 Other Pontiac Models repairs?

Brakes problem
2005 Other Pontiac Models 4 cyl Four Wheel Drive Automatic 19.K m miles

took car in for 20k oil change and was told I need
a) front caliper service b) service rear brakes & parking brake c) 4 wheel alignment.
Im 60 yrs old hardly drive car as u can c. It's 90% highway driving. And I avoid potholes most of the time.
The car is parked underground on level floor.
I feel like I'm being taken advantage of!

I have regularly had work done that is requested under the new cainstructions at particulat km points as layed out in manual. IE oil change, tire rotation.

Is the above repairs possible.