Power steering pump replacement

Hi, my car listed above is the RDX model. I recently got my power steering pump replaced at a shop. After the repair I noticed gurgling/vibrations from under the hood inside the car. I took the car back to the shop and they said that was normal for Acura power steering pumps to make sounds. After a few days I was still not satisfied so I went back to them, and they drove the car and told me that there was possible air in coolant. I never heard none of these noises before. I also showed them the tiny air bubbles I saw in the power steering reservoir only to be told that it was normal and that the power steering pump in my car naturally filters out the air it self. I am starting to wonder if they messed with my car. Any advice would be appreciated thanks.