I contacted Amex after booking my ticket. Chat agent reads out to me about $1100 ish cancellation fee. Phone agent took an hour to understand the fare and reads out around $500 cancellation fee. Both did not honor Qatar policy and say full refund is only for involuntary cancellation and Qatar may waive the change fee if they want to. Lucky i am with-in 24 hour period and cancelled the ticket to avoid fighting with Amex.

Anyone had experiences with Qatar / Amex refund?