We had exactly the same miserable experience with 200 square meters of prefinished bamboo flooring that we had layed about two years ago.
Just as in your case we were advised of all the so called benefits such as no sanding, 75 percent harder than jarrah, easy to clean etc etc. All turned out to be the sales pitch, 75 percent harder than jarrah, sure, on the end grain [}:)] you dont walk on the end grain you walk on the butter soft prefinished face! Easy to clean, I don't think so, how do you get the dirt build up out from between the boards because it hasn't been filled with sealer after sanding.
We had major water damage after the March 2010 hail storm to the whole of the house which meant the floor needed water damage repair. No one could match the floor where it was to be patched after only being down for about 18 months because they did not have any stock left of that batch [}:)]
The whole 200 square meters then needed to be removed including the staircase[}:)][}:)][}:)]
What a job.................. it took 3 days......... four guys turned up at 7.00am the first morning and created the biggest mess then at 10.00am they all went for smoko...... only one returned! They punctured the gas feed line in the top stair on the concrete staircase and the whole stair had to be removed for the plumber to effect a repair[}:)][}:)][}:)][}:)]
Ten guys walked off the job in three days, one smashed rear window glass, damaged every wall they worked against, one guy washed and prayed to Allah (I think) on our front lawn for 30 minutes before he did any work, then worked for fifteen minutes before he said it was too hard and drove off
and we rushed one guy to Joondalup hospital who was working on the front step who was having chest pains. He was having a heart attack

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Stress and flooring just go hand in hand[}:)][}:)][}:)][}:)][}:)][}:)][}:)][}:)]
Total cost to remove and replace.... about $30,000!!!!!! about $5000 was the removal