Even if they move away, you will have their statement if you need it later. Use photos to show that something needs repairs, and to prove the condition of the place when you move in or out. Write the date and address on the back of the photos, and have a witness sign them. Know your rights and responsibilities before you take action. Unfortunately, what you think is fair may not be how the law works.
Tenants often have a better chance of solving problems when they work together.
Try talking to people you meet in the halls or laundry room. You can ask to meet with the landlord or manager. They may be more willing to listen to a group. You can send the landlord a letter signed by a group of tenants. You can find a group or individual in your community to help you.