Can someone who is not the owner or title holder of a car give consent to repair and can I refuse repair and collect my car?

What is your question?

We live in New Orleans, LA and car was taken to Mossy Dealership by my son who I have given the car to to drive but never transferred ownership to.

What makes this problem better or worse?

replaced a brand new starter and claims radiator is leaking

How long has your 2009 Kia Rio had this problem?

one week