Guys, having less than 3 hours of rest before a long range flight is a major threat to aviation safety. No matter what the airline is saying about your complaints, you are still exposed as you will be the only one to be held responsible and accountable of flying under such circumstances and believe me, they will know how to remind it to you in due time.
Accepting to fly in these conditions means accepting the responsibilities and the associated risks. Not willing to make that phone call because you want to keep your job is understandable, but you have to keep in mind that this will cost you big responsibilities. In the end you will be the one to accept operating in known unsafe conditions, and your personal reasons for taking that **** will not discharge you.