TV Box - Never Used nor Activate it, can I get a refund?

Hi, I just reviewed my billing history and noticed I’ve been charged $12/month for a TV box that I never activated or used.

It came with the initial plan that I got, but I never activated it. I still have the TV box. I didn't know I was getting charged $12/m for I don't know how many years! Probably around $800-$1,200 that I have been charged overall for something I never even activate it.

I’d like to know a few things first though.
-Does returning that box change my plan that I have right now? Do I have to have the TV box in order to keep my plan? I have the Connected More plan.

-If I don't have to pay for the box to keep my current internet service, I would like to have this TV box charge removed immediately from my account going forward

-Can I request a refund or courtesy credit for the years I’ve been charged for unused, inactive equipment?

I’ve been a loyal customer and genuinely didn’t notice this fee before. Now that I have, I hope Xfinity can make it right.