Yahoo has deleted all my recent emails?

[Outlier]

Over the last few days when I log into my Yahoo! Mail (from anywhere - My Yahoo!, phone, iPad etc...) I see a handful of my most recent emails (approximately four) followed by emails from December 1st (six weeks ago!). All intermediary emails received over the last six weeks are not showing up. Even emails received earlier today (previous to the most recent four) are not showing up (have for all intensive purposes been deleted).

This is a pretty catestrophic failure and there's no good explanation for it. Is it happening to others? How can I get Yahoo! to fix this? Clearly they maike it impossible to actuall file a bug with tech support, so is there some other way to make them aware?

I can post screenshots if it's useful, but I think the above explans it pretty clearly. I best keep checking my Mail every new minutes as if I don't I'll never get to view some of the emails I'm being sent. What an Epic fail... Thanks Yahoo!.

If evere there's been a wake-up call to switch to a proper email service this is it!

Any help appreciated.
John.