Got from other thread: bnmtelelink@bnm.gov.my
Why did you apply for a Plat HLB Wise?

Like I mentioned many times, people can apply and request all they want but at the end, it still falls back to the banks' discretion.
Salary requirement could be just one of the reasons.

My HLB cards only with shared limit 10k when my other cards can give me more than 20k. Oh well, not like it matters to me because I won't spend so much on these two cards.

Higher CL might make your future applications more difficult.

Why U want High CL what for, if U do not fully Utilized it...

Mine condition almost similar with Ms.fruitie here...

My HL Cards (GSC/Essential) also combined share CL with 10K only

When 1st I got My GSC card in 2011 they just give 3K CL, on the 2nd year topped the CL up to 3.5k & till Last Year They only increased the CL to RM10k when I pair up My GSC with Essential...

Also seldom used HLB CC but only Utilized on Movie date with GSC card 

FYI, I do have Citibank & HSBC VS with CL 72 & 50K but hardly used on them...

Well, CCRIS will show the limit.
Higher credit limit will have a higher risk if struck with fraud cases.