Its depend, some of the merchant accept master didn't accept visa, or vice versa 
Are you holding free for life, I want to apply soon for the cimb master since I already get my maybank visa

i dunno if it's safe or not..

But you have no choice as the hotel can't confirm ur booking without the info.

@aarex,
If ur making your reservations or bookings through a valid / dependable source then I guess it's oK to reveal the information.  The other option is perhaps for U to do an online booking instead?  That way, U do not need to give these vital information over the phone.

if the hotel staff is unethical enuff he will use ur cc n security number...

@aarex,
In that case, the decision will be yours to make.  Unless the tele-marketing person is really screwed up, U should have nothing to worry about.  Genting is a big enough company and no reason to want to steal from U

If it makes U feel more comfortable, what about doing a walk-in booking instead?!  If all else fails, ask the person taking/doing your booking for his full name and IC number

im prefer online booking instead of call in...

yeah i do have CIMB accounts.
so i reread the whole website & pamphlets i took previously from cimb bank, it's just the same way....just transfer money to other cimb bank/credit cards & now selesai!

thank you to you too

have u try to click Account Summary?

Does your credit card shown in the Account Summary section?

Then you have to attach it to your CIMBClicks.

Get a Internet PIN (ATM PIN) for your CIMB credit card.

Do like what you did to apply for CIMBClicks using using ATM card.

But first, you need to apply the ATM PIN from your CIMB CC.

You need to fill a form. The best way is to go to the nearest CIMB branch.