QUOTE(lamode @ Nov 9 2014, 08:31 PM)
interesting question... imagine the CL is 20k, 80% of it, which is 16k already used for BT, then i overpaid 10k, which makes the available limit as 14k, and i used 11k for another BT.
once both BT are approved and is MBB going to allow me to transfer the 10k overpaid back into SA/CA?

from my experience, talking about MBB, your 11k BT would be declined. your 'actual' CR balance is 4k, can do BT for RM3200 only. Overpayment does not count, unlike Aeon.
But MBB refund is simple, say statement showed payment due RM2000, if you pay RM10k, can get refund RM8k, no deduction from current outstandings accumulated, again different from Aeon.
I had overpayment RM9700+ in Aeon on 3.11.14 when i requested refund (after Aeon declined 2 BTs), by the time the officer called to approve it on 7.11.14 the refund amount has reduced to RM5700+ , deducted BT installments posted from 3-7.11.14. Interest free cash advance, never mind.