Request for official termination. But that means, kung hindi pa tapos ang lock-in period mo, then the termination fee, based sa Terms and Conditions ni PLDT, are as follows:
(Monthly Service Fee * 3) + Outstanding Balance, if any + Pre-Termination Fee na 500.
For example, plan 1699...
(1699 * 3) + Outsanding Balance, if any + 500
Kung hindi ka magre-request ng officialy termination, kung hindi pa tapos ang lock-in period mo, then continuous pa rin na tatakbo ang billing mo, kahit putol na. That's what a lock-in period (or contract-basis) for any postpaid plan means.