Thanks for your post and welcome to our community.
Sorry to hear you're paying for a contract you're not using, this isn't good.
If you have a PAYG SIM card that isn't used then it would be terminated within 90 days, this did use to be 365 days.
If you have a contract it's slightly difference, we'll need to have a look at the account and see what's going on.
So I'll pop you a message now and we'll take it from there.