Why are historical prices unstable #2?

I strongly re-emphasize the truthfulness of my yesterday post:

https://answers.yahoo.com/question/index?qid=20140...

That issue is perpetuating.

If others cannot replicate it, I think it could be because, in my case, the download request (tho mouse click) gets routed each time to different Yahoo servers that contain different data. While, for those who cannot replicate, gets routed always to one server (always the same) that contains good data.

Also, I was suggested to report the problem to Yahoo Customer Care through a link. I did not find anything on that link (and its sub-links) that allow users to contact Yahoo Customer Care.

Kind Regards.