Mercedes-Benz of Calabasas

We purchased a certified pre-owned vehicle from another Mercedes Benz dealer but all the service work was performed at this dealer. I was told by both the dealer and Mercedes Benz USA customer support to contact this dealer to get the service records. I first talked to a service person whom I did not get a name who told me to call back and talk to Marsha Gay. After talking with Marsha she had Judy Harrigan call me who tole me to send in proof of purchase and the information would be released. After sending proof-of-purchase I received a letter from Ken Deneault, the Service Director, erroneously hiding behind privacy laws indicating they could not release the information. When I called back Mercedes Benz USA customer support they then contacted Mercedes-Benz of Calabasas and when MBUSA returned I was told it is up to the individual dealer policies (not laws) and MBUSA can not force them to provide the information. The entire experience is bitter as they are unprofessional and evasive and try to hide behind non-existent privacy laws. It seems that Mercedes-Benz of Calabasas has systemic credibility issues and I would choose an alternative dealer if I had the option.