INFINITI of Tacoma at Fife

I took my car in for a noise in the vent system. I have a extended wrap warranty coverage that requires the service to be completed at any infiniti dealership. Diagnostics cost $200 for an hour. Nothing was found except a leaf blocking the blower which caused the noise. They informed me that it wasn't a warranty issue and I was stuck with a $200 bill. Really? This price for diagnostic for an hour is ridiculous and there is no customer service at this dealership. I will never take my car for repairs to this infiniti which is privately owned or recommend someone to buy an Infiniti due to horrible service.