Hmmm, I for one must confess to working G's to try and solve a situation where CC/rostering have not given me my requests.
However, I have joined the ranks of no G day working now after receiving numerous calls from 2747..., looking at the crew list and seeing how far the problem goes. Unreal! Replace this crew member to fill that slot and now get someone from another flight to fill the new slot etc etc. Gotto to be hurting!