In 90% of cases porting is done within 4-24 hours, in some rare cases if something goes wrong it can be longer. It is hard to say what is causing the issue and as this is a public forum no one here would be able to sort it out for you.
I would suggest calling the porting/activation team again and give them the INT number and see if they have an update for you. Alternatively, you can lodge it as a complaint with the details here: https://boost.com.au/about-boost-mobile/compliments-complaints/