Yesterday the overhead storage unit in my apartment's carport fell off the wall and onto my vehicle.

Yesterday the overhead storage unit in my apartment's carport fell off the wall and into my vehicle. I had contacted the building manager in March regarding my concern that the 6unit structure appeared to be sagging and did not appear secure. Upon inspecting the scene yesterday I noted that the storage unit had been installed in the cracked concrete wall using only nails and that there were no anchors holding it in place from the beginning. I have been told that they are not responsible for the damage to my car and that I need to remove it from the carport. However, there are wires (that are still connected to the building) draped across my vehicle and do not feel safe. I have informed the building manager of this but have received no possible solution. In addition, the same day I received notice via mail from the building manager that they want to increase my rent (my apartment is rent controlled) to cover the, "increase cost of maintaining the building." What Are my rights?