Please stop yelling at us!! :-D
If this was a package installed a month ago, and they now have a laying worker and beetles, I'm really sorry to say this, but I'm afraid they've about had it. A package of bees has a big enough challenge just building up, and now you have month old workers at the youngest (and lost all the older ones) and an aggressive predator in the hive.
If you have access to at least one frame of capped brood, I'd recommend basically a split(three frame with all the bees and some more) from another hive and maybe shake these bees out in front of the split. Then they can raise their own queen.