I was told by my Lexus service advisor that my rea...

I was told by my Lexus service advisor that my rear brake calipers were seized and I needed to replace them for almost $800. The advisor told me that who ever replaced my rear brakes did not oil the calipers and so they seized. But it was Lexus that replaced my rear brakes so it was negligence on their part. I did not go forward with the service because obviously the advisor passed the blame, which was actually on Lexus. They are untrustworthy. Since my advisor changed, I have become less and less inclined to have my car service there because he is very limited on my profile and history with Service department.