You definitely got scam. Where did you take it? Also, this is something you could have done yourself. Spark plugs they already come calibrated all you have to do take the old ones out and put the new ones in. Spark plug wire easy to remove. Oil and filter easy to change. Go to your nearest Dollar General buy a plastic tray and get a clean rag a wrench I believe 11/16 but metric and do the change yourself. May be a little messy but to save money it's worth it. If you live in a State that winter is around, you and cold talk to a friend give him a $20. to use his indoor garage. Man, it beats paying all that money you paid.
Some people think that you have to buy the brand of the car parts. Thats Bull, you can buy everything Tru your parts store. I live in South Carolina and have a 2013 Kia Soul Plus; I buy my parts from Ebay all the time. Oil and filter from auto zone. Since I go there every 3 months to get my oil, I get whole price. I purchased my Kia with 35,000 mile I now have 126,000 miles. Not bad since 2 people use the little car. Good luck for the next time.
One question did you get to see your old parts and did you get a receipt?