Has anyone opened a ticket on the Achievements tab and gotten a fix?

My Achievements tab shows an alert for "5" items that aren't on the list, a bunch of Achievements I was near to completing are gone (e.g. 1000 runs of LoL XI-XV), and a bunch of old Achievements I've already completed are back on the list.

Half the time I open the tab, a bunch of old, completed Achievements are at the top of the list , half the time they aren't.