My oil pump went bad under some interesting circumstances, how should I best handle this situation?

Question

Ok, so I bought a car that had been sitting for around three years, first thing I did was take it to get the oil/fluids all changed and everything checked out, then I added some fuel treatment. I ran one errand and went to work yesterday, then this morning on my way home the main oil seal and the oil pump bit the dust. I noticed the oil leaking out of my car looked black, like it had never been changed, granted the car had been sitting and without a complete engine flush it should be expected to be dirty but it looked pretty bad, and the oil filter also looks like it wasn't changed, extremely dirty can't even make out any brand name or anything on it.

I'm working on getting my money back for the car, but I want to know if there is some kind of action I can take against the place that "changed" my oil.

Is it a possibility that for them to have to pay for the repairs to the vehicle? According to the receipt they checked the oil pressure and such, and with the oil pump about to go out hypothetically it should have been kinda off. Also on the receipt it says they cleaned my windshield, vacuumed the car and checked my wipers which they clearly did not.

Any and all advice would be greatly appreciated.

Answer 1

The oil change shop,can not be held responsible.Many of these workers,are not mechanics.The chances of winning is zero,i'm afraid.

Answer 2

when you sign the form to get the oil changed, the company cant be held liable to any damages to your car. Unless that is, it's negligent meaning that the mistake was obvious, stupid, and caused major damage.