Prepaid Call Barring Issue
Hi, I am currently using my Starhub Prepaid card for overseas usage. I have activated roaming and bought data plan whenever I need. While I am in overseas, I have no issues receiving calls and surfing the Internet. However if I want to make an outgoing call, there is a voice prompt saying that all outgoing calls are barred. I have tried to do all means necessary to disable the call barring via the USSD codes but to no avail. It states "Sim or Network Error". I have already disabled all call barring functions on my android phone but I still cannot make outgoing calls. I also tried the usual steps of trying the sim card on other phones, reseting the phone and so on. Do note that I have sufficient balance in my wallet for roaming.
Is there any way that my prepaid line be reset or something? Anyone can advise? I am on the verge of changing telcos.