Digicel Wantok combo

CAN Digicel inform us how long the Wantok combo lasts?
Is it 24 hours or a day-unit patch?
It looks like after patching a combo, and a frequent call is made, it expires before the allowed 24 hours.
It expire after a couple of calls before the much talked-about 24-hours.
Can the national Government under the National Information and Communications Technology Authority (NICTA) install a master monitoring system to effectively monitor promotional calls or combo calls?
Is it that our monitoring system is outdated or we don’t have one currently monitoring the combo or promotional calls?
Government is registering mobile phones to monitor its citizens, but looks like we are not capable of monitoring the daylight robbery of units.

Minas Nest Inn
Sinasina, Chimbu