said by Jim_Arkansas
:Thanks for your kind reply, Joe.

I just checked, and I can confirm that I do have sucker written on my forehead. Do you have something that rhymes with it written on yours? One might infer that from the tone of your reply.
But I digress...I did a search on this subject before my post, and one hit seemed to suggest that I'd only be liable for the $300 Early Termination Fee.
Did they make you take a new 2-year contract when you upgraded? Mine was for 15 months and I cancelled with no problem at 15 months. I think HN extended the contract period to 2 years soon after I got my system. I did not have any problems with HN Billing. Call them and ask.