I don't know symptoms

Seems like everyday we encounter the word "I don't know" from every related or non related individual in our lives.

I think it's been one of our daily motto(for alot of people)

For example:
1)
Me: "How long will take the "PR" to be approve?"(for my wife)
A "very helpful" immigration officer: "I don't know, Agak lama pun" -So which is which? took very long time? or don't know at all?
2)
Me: "When can I receive the actual items ?(for my customers)"
My warehouse staff(in HQ): "I don't know, when the item arrived from Hong Kong lo"
3)
Me: "What's the status of your XXX customers requirement?"
My Sales Staff: "I don't know, maybe (this reason) and maybe (that reason)"-uncertainty or not doing their job.
4)
Me: "May I know when will your management finalised the deal? Maybe I can prepare the items you need in advance?"
The customer: :"I don't know, we will need to wait lah"
5)
Me: "So what happen to this machine? "(concerning about our customers satisfaction towards my company's product, because it seems broken in an impossible manner)
The staff: "I don't know, It just became like that"-Huh? like that also can.
6)
When we are having a stock check and found some mistake and would like to clarify with my HQ,
My Staff: "Can I checked whether(3 moths ago) you had received any goods return to you?"
My HQ Warehouse: "I don't know lah, later I check, I let you know." But always this will be last answer we heard from them.

With so many "I don't know" everyday- some occasions if I am weak enough, I might vomit blood.

But I do find some specific occasions that this word does not come in use at all, especially when it comes to "Money". For some example:

1)
Police: "You sudah exceed speed limit, you tau?, so nak jadi kawan?"
Me: "Huh?"
Police: "jika saman RM300 (like my Sales Exec, show the highest price then lower down when request), bayar sekarang RM150."
Me: "Nevermind, saman shaja."
Police: "Betul ke nak saman? RM 100 pun boleh."
Me: KNN...(in my deepest thought)
At the end pay RM 80 at the Police counter.

2)
My Staff: "Why my pay is so little this month? why no commision?"
Me: (thinking that your sales result is not even good at all, somemore complain). "Err, last month you have no sales, so this month the company did not bank in any commision for you."
My Staff:" Eh! I thought the commision will bank in on the same month I do my sales?"
Me: "No, how can the company calculate the commision based on the same month when the closing is at the end of each month and your pay is being released on the 26th of every month" (rolleyes)
My Staff: "Oh, Like that lar"
Leaving me speechless...