What's "maddening" is that you won't evaluate the leaking tubes to see where the leak is. One, MAYBE two faulty tubes is possible, but more than that clearly points to problem with the tire, the rim, or installation error. And if you obstinately refuse to check for those things, that's a different kind of user error. Where the leak is, and what kind of leak will tell you what theproblem is.

I'd be willing to bet that you've heard multiple variants of the word "stubborn" directed at you more than a few times in your life. Yes?