Received an e-mail (and snail mail) about coming i...

Received an e-mail (and snail mail) about coming in for my first complimentary oil change (bought a car here earlier in the year.) Called about this and they set me up with an appointment a few days later. When I came in, they told me that the complimentary service only applied for new cars. Then I waited for THREE HOURS to get a standard oil change. Leaving two stars instead of one because the employee was kind and apologetic and was willing to give me a slight discount.