Went there because my engine light was on. Call to...

Went there because my engine light was on. Call to make a appointment and was told to bring in the coupon from the web site and I would not be changed for the diagnostic test. I asked twice and was assured. I got up very early and traveled a long way thinking I was going to save 90.00 only to find out it was not true. I was told by the service consultant she would look into whom I talk too. It was not done, They did fix the car but I hate being told misinformation. I wont be going there again. Ask questions and get names if you must go