Just found this thread. I also got a phone call from +6 016 920 4041 on 25/6 at 5.30pm asking for my Maybank credit card details. Seems they have a 'reward' to send me but require my CC details first for verification. I told her if she is from Maybank, she should have my details already plus I don't feel comfortable giving my CC details over the phone. She tried to convince me but I just said never mind, don't send me anything, no need for verification. She just said ok and hung up.