I bought a groupon coupon for 2 synthetic oil changes. The first one I used was perfect in every way. However, I went to make an appt for my second car and all of a sudden, no one answered the phone so I left messages. I called 4 times and left 4 messages for a callback on 3 different days. No communication at all. I called groupon and they told me that they got in touch with the shop and they would call me in the next two days. Nothing, so I got a refund. It must be nice to own a company that doesn't need any customers.