StarHub / Porting of prepaid no. To postpaid for starhub

I have applied porting of my starhub prepaid no. to postpaid since 26dec through online store. I have received the postpaid SIM card on 31dec but till date (5th Jan) the porting is not done yet even though I checked with starhub it have been approved.

Each time I called in, I been informed that it will be done within 24hrs, which now ended up I am been waiting for 96hrs and the case also have been escalate to the porting dept but still unresolved.

StarHub Customer Care Service
67 Ubi Avenue 1, #05-01 StarHub Green
+65 6820 1633