I really wouldn't consider this a huge ordeal. They substituted a comparable oil that met the manufacturer's specification of your vehicle. This is one of those where yes, you are technically correct but the shop really didn't do anything wrong.
It's not like they didn't change the filter or you brought your own mobil 1 and caught them pouring in AAP oil.
It's not like they didn't change the filter or you brought your own mobil 1 and caught them pouring in AAP oil.