cant get game progress due to bug

[WisdomMan87]

game keeps crashing and save files are gone on quick save and command hub saving too , game keeps reverting back to an old game save , totally unplayable at this point, also last achievement i need is bugged  (flyby of kerbin achievement) lost over 30 hours of game play time due to save files bug and spent about 10 hours trying to get the bugged achievement(tried everything) over a third of my time wasted thanks a lot , next time if your game isn't ready put it in preview or don't release it at all until thing are fixed , i have come across over 30 different bugs in the game , most bugged game i have ever played over 1000 games i have played over the years , dont know how Microsoft cleared your game in the first place to be available...