Bought a 2015 Optima at the beginning of May. I no...

Bought a 2015 Optima at the beginning of May. I normally wash my car by hand, but recently took it for its first drive thru car wash. The shark fin antenna blew right off (remember it was my first drive thru car wash).

The service department refuses to fix it under warranty because they determined it was not a manufacturer defect. If it's an aerodynamic part, why did a little bit of air blow it right of the roof? It either caught air from underneath or the part was screwed in too tight both of which can be considered manufacturer defects.

Careful when you take your Optima to a drive thru car wash.