I spent 3 years combating bamboo in a similar fashion and it certainly didn't work for me. I've never experienced a more frustratingly invasive plant in my life. Even wild blackberries are easier to deal with.
You may appreciate the fact that Bamboo sprouting is edible. I add rings of fresh bamboo to my pasta dishes and is a nice touch for a summer salad.
Just use only the new stems, the parts that can be sliced with a sharp kitchen knife using your hand and reasonable force, and discard everything else.
Best advice is not planting it unless you have a lot of space and something to do with it or build --strong-- concrete root barriers. Alcatraz jail level.