Mopar Dealer Service Department - Am I Correct To Be Pissed Off???

They did not bother to look at it.
I took my wife's Jeep in for oil change and tire rotation.
They said it also needed a cabin air filter and an engine air filter, and extra $100, I said no way.
On the way home stopped at a local auto parts store, picked up both filters $35 and put them in my self.
The cabin air filter was nasty, the engine filter was still clean.
There in no way the tech checked the engine filter because its a sob to get out, and the dust was not even disturbed on the filter housing.
The service manager can only go off the word of the tech, who most of the time is on flat rate, so the tech not doing their job, actually is making money.

A good friend of mine, worked for chrysler in the late 80's as a mechanic, when chrysler was having all the head issues on the 2.2 engines, he found a way to beat the labor rate, by not removing the head all the way off the car, he just lifted it enough to slide the old gasket out, and a new gasket in.
He also said only about 1 in 10 came back with a cracked head, but he saved a 1/2 day in labor by not removing the head.
He was on flat rate, so that was a 1/2 days wages in his pocket.