Help... urgent situation

My family member was looking at the aquarium and thought the filter looked dirty. Without asking me, they squeezed out the sponge filter inside the tank, rinsed it with tap water, and were about to put it back in when they accidentally dropped the air pump into the tank. The power was off at the time, but since water got inside, I don’t think it can be used anymore.

As a result, I can’t reinstall the oxygen supply system and the filter in the tank. They don’t know anything about aquariums, yet they touched it without even asking me. I feel like I’m going to lose my mind. Please tell me what I should do now.