Hehe they did the same thing to me, told me I was getting a $99 credit for SuperFan for the same reason. But the billing cycle came around and I got charged $99 but did not get the credit. Called D* told them the situation and they said "stange you shoulda gotten your credit" and supposdly credited my account.
2 Weeks later still no credit..... called again and explained it again and BOOM a $99+tax credit on my account. Now this is where it gets sweet for me, today I logged onto my Account and there is now another $99 credit

About time somthing went my way for once!!!!
So for this year
1. ST: $209
2. STSF:$99
3. Credit: $99.00
3. Credit: $99.00
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NFLST+Superfan for $109 plus tax Priceless