choose those Flexipay plans with 0%! here's how it works..
Note: Quantum need only RM1.2k for Flexipay 12mth 0%. Other PBB cards need RM2k for Flexipay 9mth 0%.
1) swipe a big amount from a merchant.
2) after the transaction got posted (about 1-3 days, varies from merchant to merchant), call PBB CS to convert to Flexipay.
3) next day, you'll see the original amount will be "reversed", then 1st installment amount charged.
4) in your statement, it will show the Installment # count and remaining installments. Every new statement, the # count will increase, the balance will reduce.
Final installment:

woah... thx for the detailed explanation!