Here are a few steps you could try:
If you are still facing issues with receiving incoming SMS, please drop us an email at gigacares@giga.com.sg, providing the following information:
We will respond to you as soon as we can!
In compliance with relevant law authority guidelines and to ensure safe and reliable services for all, giga may proactively suspend lines detected to be involved in suspicious activities. To reactivate your line, you may file an appeal by writing in to us at gigacares@giga.com.sg.