Worst experience ever. My lease was ending on 30th...

Worst experience ever. My lease was ending on 30th September. I had opted to continue ahead for another 6 months. But on 18th sept I got my visa rejected due to which i had to leave united states. Highland management charged me $2400 fine when they could have just asked for application processing fees($100). I had paid heavy lease breakage fees for the lease term which i had not even started.