<human>: Can you summarize the given text in a few sentences?

My fiance and I had to cut short our lease at our current apartment. Our apartment doesn't allow subleasing however our leasing agent said that we can find people to add to our lease then remove our names off the lease as a roundabout way. 

We found a couple that was willing to do this, however the leasing agent got a hold of them at some point and quoted them a monthly rate lower at what we were, and then said that we couldn't sublease to them and would have to break our contract which means paying a $900 fine.  

Is there any course of action I can take against this?

I am going in to talk to them tomorrow because I have to work today. Any help in this case would be very, very appreciated, $900 is a lot of money to us right now as we are both paying off college loans.
<bot>: Our apartment complex essentially stole our potential subleases and therefore forces us to pay a $900 breach of contract (North Carolina).