I buy a new Kia I take it in to have a oil change ...

I buy a new Kia I take it in to have a oil change and they say you need new brakes drums and tires and you need a coolent flushed I go to 3 other garages and they say everything was fine brakes and all? Go to a tire place and they say that the tires I have should last 50,000 miles I only have 34,000 miles on my car? Every one in waiting room was told that they had things needing fixed non under 300 bucks and then the worst thing is staff walking they and laughing and carrying on right in the office behind the tv in our waiting room and not to mention telling me if I give you 5 star ratings I will receive three free oil changes