I arrived at 8:20 am for an oil change and told to expect 1 hour. I did approve oil and air cabin filter change, but work wasn’t done until after 11 am.On arrival at home (I live in central Denver near Wash park) I began hearing loud noises from cabin AC. I was instructed to return and told there was likely debris in fan and needed about 1 hour to disassemble and remove debris at 1245 pm. I was not given updates though Yesenia said she would check on status after about 90 minutes but never returned. I sat in waiting area with a nonstop police program (unpleasant)until a little before 3 pm when I went to express my concerns. No one knew why I was there in spite being the only customer in service area. When another clerk appeared with the finished paper work and I expressed my dissatisfaction that this problem had been caused by the cabin filter replacement being done incorrectly I was told by a service clerk that they were not responsible because I likely parked under trees and caused the issue. I have had the car for ten years and parked many places and never had this issue. My research of standard care for cabin filter replacement in Fiat and most cars is a strong warning for technicians to carefully vacuum out any debris prior to avoid this issue.I did not like the treatment or lack of communication. I am disappointed that I have one more prepaid service because I don’t want to go back. I had a similar and even worse experience at this center a couple years ago with poor communication and extensive delays in service.I bought my car from you 10 years ago, am in the market again soon, but think I should go somewhere else. I am sorry to end our business relationship and think I might eat the cost of the prepaid service to avoid future issues. I spent an entire day in and traveling to and from your center and was almost late picking up kids from school. I am very sad and disappointed how this went. I will say that the check out clerk who walked me to my car expressed an apology for my experience and lack of communication. I will speak with your representative if they have further questions.Dr. Nick Gilman303-587-8651