Last time I was at a Jiffy lube was with my GF and her Mazdaspeed3 since I couldnt easily get under to change it... I brought in my oil (mobil 1 since I refused to pay their $99) and they said they couldnt do my oil change at their standard $25.99 price since I wasnt using their oil. WTF? Talked it out with the 'manager' for like 15 minutes and he finally agreed to do it. Then to top off the whole ordeal, they get the car done and pull it out and walk off and I see it start rolling down the hill outside the door so I yell at them that the car is rolling away and they run after it and set the parking brake.
Apparently they didnt know how to set a parking brake or leave a manual transmission in 1st to keep the car from rolling. And of course they still tried selling one of their stupid expensive air filters since ours was 'extremely dirty' (the cars filter had 4k miles on it, changed at previous oil change and was barely a hint of dirt showing).
This was a year and a half ago, and we'll NEVER be going back in my lifetime.