I think it should be 24x7, especially if it is an international 1300/1800 number. If I'm purchasing something online or I'm overseas, the full CS support must be there, even if they are in different time zone.

What I mean is, in today's world, I can be anywhere in the world, whether physically or not, or if I'm awake/check-out/purchasing at different time zones.
If I need the CS help, it better be there, otherwise don't advertise 24-hours support or 1 hour replacement or whatever.

Any CC promo new application that offer free big luggage now ? couple of months ago I think I saw Citibank but missed it.

It takes BNM CCRIS 12 rolling months to clear past history records.
Provided you don't have any further NPL or CTOS blacklist or bankruptcy/court case or something else, you may try again after 12 months from when you settle your previous debt.

However, unless you learn your lesson on previous CC usage and how to manage and control your usage + prompt monthly payment, my advise is not to use the evil CC.

Swipe CC in Casino for cash-chips is considered as cash advance. It used to be normal CC usage, until smart Malaysians find loophole. "Wash" the cash-chips and cash out. 20-30 days money to "cycle". At the same time gain massive CC points.

Anything else (hotel, restaurants inside casino, etc.) are treated as normal CC usage.