Let's say you see a technical paper that is clearly and fundamentally flawed, published in a well-respected journal.

Let's say you obtain the original data from the authors and put together a demonstration that the proposed method isn't working.

Let's say you write a Comment describing your results and send it to said journal.

And let's say the journal editors, while agreeing that you have a valid point, reject your Comment without further consideration because it is "not significant."

Now where else do you send your negative results for publication?

Grateful for any suggestions.