I have purchased several cars in my life time and ...

I have purchased several cars in my life time and this by far was the worse experience ever. The management team made the experience terrible by providing wrong information and attempting to give a higher interest rate. As someone who is in the financial services business, they attempted to provide wrong information and were upset when challenged for their misinformation. This could have been a lot better experience if the finance manager was brought into the picture during the time that the sales managers were trying to increase their interest rate kickbacks or just being misinformed of the financing products available. Only reason, I purchased the car was from this dealership was due to the great attitude of the sales associate and my ability to negotiate. I wonder how these sales managers are taking advantage of those who are less informed on financial matters. I am now concerned about taking my car back for the service that's included in the warranty.