I have a YesTV by Fetch subscription with Optus. I watch FetchTV on the Fetch mini box. I also have Optus sport included on my phone plan with Optus which I can watch on the optus sport app on my phone.
However, when I try to watch Optus Sport on the Fetch mini box it asks me to subscribe and lists the price as $14.99/month. It also states that "Optus sport is $14.99/mth unless it's included in your plan. Visit optus.com.au/sport to see plans it's included in. If you've already subscribed then you don't need to do anything".
If I select subscribe and input my FetchTV pin will I be charged or will the subscription fee be waived because I have an Optus Sport subscription included on my phone plan?