Well, the plot thickens....

Wife found a puddle of water in the pantry earlier today, she heard maintenance working in the apartment that backs up to ours, so she went over there to try and speak to someone about the leak. Come to find out, it was not only the complex maintenance guy, but a commercial clean up crew, tearing out drywall and bleaching everything, because there was black mold throughout the other apartment on the wall that we share, and to make matters worse, there is still a hole under our kitchen sink, from when they did plumbing work, that is a direct line from our apartment to the infected one (see picture).

My wife talked to the cleanup crew, and allegedly, after their initial assessment, they recommended that we, and the apartment that backs up to us move, and nobody from management mentioned anything to us.

Any input from the peanut gallery what our next step should be?