Business ProfileforMercedes-Benz of Laguna Niguel

Im ready to express my disappointment with service I received on March 25 at the *************************-Benz. As a long time ******** customer I expect a level of service but unfortunately its Was not met during my visit. Before arriving at the dealership, I was provided with incorrect information regarding my warranty work. They said that my battery was covered under warranty. When I arrived they told me that the batteries were not covered under warranty. I was passed off to multiple individuals during the check-in process, rather than being assigned to a dedicated service provider which further exasperated the situation the individual that assisted me during check-in was short and rude, and didnt have very good bedside manner. I turned into car keys that needed the battery replaced, and Quoted $900 to replace both batteries in the vehicle. They also said that I needed to pay a diagnostic fee even though I knew what the problem was. I was confident it was a simple battery issue and just wanted to purchase the batteries. I received a text message from *****, my Service advisor that *** never met with a new price to replace the batteries in the car which was exorbitantly higher Than the original quote. I was charged $409.50 for the starter battery and $278.30 for the secondary battery and $530 for the diagnosis. The frustration upon returning to pick up my vehicle they only had one of my keys. Despite multiple times to address these issues including leaving message for the ** and service manager. Ill be able to receive satisfactory resolution they are requesting that I pay $790.72 for a new key have misplaced.