Complaint Review: 5 star auto spa

I went to 5 star auto spa in the month of december 2013,i only needed a oil change,but the attendant kept trying to sell me other services,engine flush,differential flush etc,but i refused and he seemed to be upset because i wouldn't buy any of his extra services.Because of his demeanor i didn't feel comfortable having him work on my car,but i went ahead and got the oil change.When i got home i started to look over things on my car and found that the drain plug on my oil pan was partially inserted,oil was leaking at a steady pace.I'm 90% sure this was no accident,but a show of his frustration when i refused extra services.I would never use this business again,not even for a car wash based on some of the other complaints i've read.