Had a similar experience last month. Qantas tried to downgrade me to premium economy on a flight from Haneda to Sydney. I was offered $400 cash and a points refund.
They admitted to being overbooked and obviously as a bronze FF I was high on their list to downgrade. I refused the downgrade...
I had an awful experience with Expedia when American Airlines changed the time of a flight I had booked. It was an 89 minute change which meant I was not entitled to a refund! Very sneaky of AA and the new time just didn't work for me.
After hours on the phone with Expedia I got on to American...