Found out that ctually any places can get u the units amount you want, it all depends on the willingness of the teller and the time (many ppl at bank queue or not). And it is not easy to get units by 1 try or even 10 tries, u need to find someone who willing to spend the time n energy for u, tht they r not busy (too many people), and their heart is willing to help. If not, it's doomed. Of course, if they click once, 90% won't return any success. It is very repetitive, keep on tapping and tapping to refresh, but if u found a willing teller, they can get you the units u want, within maybe 15-20 minutes, not in 1 transaction, but multiple transactions if your amount is large. Most of the time, the unwilling tellers will (in order of 'un-helpfulness'):
a) Try once and give u the easy answer "No Units". May even mock you for telling them to try amounts like 2k or 3k, bash you with liners like "You'd be lucky to get even 50 units!"
b) Try a couple of times, stops and then tell u no units.
c) Try harder than (b) until at least 1 transaction is successful, even if not up to the amt u want, just finish the transaction and ask u to fill up form.
d) Willing to try incrementally (multiple transactions) until it gets to the amount you want. Then only call you up to fill forms etc. (This is the really rare gems to seek for).
Of course, if you have connections, family/relatives working as tellers, it'd be so much easier, I saw stacks of ASW/ASM passbooks at one teller and I asked them, they said, it is for their staff only (probably family and relatives as well), they told me they don't provide outsiders the service to put your books thr and they try to search units for you.
glad i'm not one of them.