PM company dropped the ball

[John Davis]

I was inform by my PM that a tenant is moving out an not renewing their lease. Fine I stated, they performed the checkout check list with PM. The tenant left a lot of trash but no major damage. This was completed on Tuesday, I came to drop off new locks/deadbolt at the PM office. After some chit chat the owner asked me about tenants deposit check. I ask her what did the tenant pay, she handed me the lease because she didn't have her glass. I noted it was only 535.00 and then I noticed something MAJOR. The tenant had moved out before the lease had expired! The lease is due to expire on 8/31/2016! When I pointed this out to PM owner the room got very quiet....

What should I do? The PM company clearly made a HUGE mistake. Im out of 3months of rent...should I charge PM company for my loss or go after tenants? 

Open to all advice....in NC