Provide fair reimbursement for travel paid for but not provided

Delta's 6-hour evening flight (DL1840) was grounded en route on 2/14/2012. Shortly after getting airborne, the pilot said we would be landing in 20 minutes because the cabin pressurizer was out. I wondered if the plane would explode or implode.

The staff at the airport were unpleasant in demeanor and told me that there were no rooms available, though we had landed in a large metropolitan city.  In addition, I was told I'd  have to wait until tomorrow evening for the next flight to my destination.

I did not have that kind of time to wait for the next flight, as I had to get back to work. I booked my own flight on American Flight 270, which left at 0820 in the morning for my destination.

I sat in an airport chair all night long, except for the time that
I spent retrieving my luggage from Delta's baggage area and resending it through American baggage checks. 

The expense my account has been charged for the American flights=$1,331.89.  Delta has agreed to reimburse me $120.00. It is hard to believe that after such treatment, I can not even get a customer service representative on the phone. I wish to be fairly compensated for my expenses on American Airlines which occurred as a direct result of Delta failing to provide the air service I also paid for.