Help me identify this pest

Yesterday I noticed that some of my Tsoi Sim were full of small beetles. I had noticed that there was something eating them, but I thought it was slugs (or maybe it's also slugs). These beetles were hiding where the flowering buds were coming up; they're grey-ish (like very dusty black beetles), and small (not more than 3mm I'd say).
They look pretty much like the picture of vine weevils, including the long mouth parts, but the descriptions of those gives a much bigger size. Do I have small vine weevils that will grow bigger, or something else?
My word, I was prepared to get some pests, but I can't believe how many different ones I can get in so few raised beds and pots. Is it always like this, or is this a particularly bad year?

it sounds like flea beetle 

They're not immature ladybirds are they? I saw one today and they do look a bit like a beetle and are a dusty grey but have some orange coloured spots on them.

the ones in the link appear to eat and lay in cabbage seed pods?

don't thank me ma'am, thank google....