The worst place to change a simple engine

The worst place to change a simple engine
oil ..EVER.
I came here 4 times total ,from wich 2 times were with problems. Including last one. They scheduling way more customers that they can handle. My appointment scheduled online on their webiste was 12:30 with a person that had lunch around then,and they told me they have 2 cars for oil change before me. After i insisted to get oil changed as scheduled they agreed. Still at the end they were done with my car at 2:50 pm. So 2 hours and 20 minutes to change oil? Meaning they put me at the end of the line.And at the end my car wasn't even washed outside (courtesy wash) and someone was messing with my battery since the clock in the car was reset. For what reason? Very unprofessional and poor service from them in any way . They strive for quantity instead of quality. I would never again bring my car for service even if they are only one left in the world.