Well, I think that the folks you talked to don't know straight razors, or decided not to care. One post-factory honing couldn't have caused that three-point contact you've got, and even a tapeless honing wouldn't have left that distinct shoulder. In fact, you'd be able to see some hone wear right on the high side of that shoulder, at least with a hand lens.

It looks to me like your blade left the factory but shouldn't have. Have you asked to exchange or return it?

It's not that it can't be made right; a pro honer could correct the spine, as long as the blade itself isn't warped, but you shouldn't have to spend more money on something that should work correctly now.

Sorry to hear this is turning into a hassle for you. Where do you live? There may be someone nearby who can help you out.

Best wishes.