Poor experience twice

I have brought my car twice to this franchise and have both times experienced issues. The first time they dropped oil from the oil change into the belly pan of the car so that when I parked it at home on a slope, an oil leak happened. They had to come and fetch the car, clean it up and return it, which they did because of their own poor work. The second time they told me when a part would be delivered, so I booked a service and part fitting well in time to have both things done at the same time. Turns out the part was not there when I took my car for the service, but I was only told after I had dropped off the car and gone home. Now I have to take it back because they were incapable of having an internal conversation - the car was clearly booked for both items to happen on the same day.