i have a call from this number this afternoon but i was in class so i didn't answer. after that i tried to call back but busy line. just for fun i trace this number on Google and OMG. thanks god i'm not answering..

They are just an outsourced company, not directly link to any bank.
Those bank/institutions are their customers. They help to bring value added services to card holders, and I believe, with certain commitment monthly or yearly.

Yes, Itried many times but the number is always busy...

I'm too getting a call from this number, but there are network busy when i'm call back.

Calling on behalf of Standard Charted Bank. Sell Insurance.

I received call too. 1st talk in malay then I answer in english & pretend dun understand malay.. she  continue intro herself in english say that call on behalf of hong leong bank asking me any problem with my c/card or anything i would like to complaint can call d customer service center. Then telling me that they need to update their system now and ask me how old am I... vry suspicious rite... i hang up without a word.. dun waste my time..