I've left Melbourne and went back to my country, it was quite a rush trip home that I forgot to deactivate my mobile number. I found a way to deactivate starting from entering my number in and I will receive a code to proceed the cancellation, I didn't complete the whole process thinking I could do this later, turned out I couldn't find that particular link to that page I've visited. There's a phone number to Optus to do this, but I prefer doing it online though. Can anyone give me a hand to find the way I just mentioned? Thank you.