You got raped. No easy way to put it. read the service requirements, when you take the car in ask for those specifically. agree on a price before they start the work. did they replace the air filter and cabin air filter?
My wife made the mistake of letting them change her cabin air filter at the dealer. they charged her 89.99, she looked mad when i dropped the glovebox and pulled it out and put it back in in 1 mins.