Using the information in this Wiki I was able to cancel 4 tickets on 3 itineraries with re-deposit of miles promised in 7-15 days and "partial" refund of taxes in 3-5 months. Got lucky I guess, got a rep who spoke English well and connected to her pretty quickly after the initial menu navigation. The Wiki instructions at the top were very helpful, thanks! She indicated there were no penalties or fees to re-deposit, but I assume the partial tax refund will deduct the $25 booking fees. Three of the four flights had major flight changes but they refunded all four with no issues. Not sure if it helped at all, but I did agree at the beginning of the call to answer the phone survey at the end of the call. After hearing all the horror stories about this process, I am counting my blessings!