Just received this email from Sprint in regards to getting the credit:
Thank you for contacting Sprint regarding media hub discount.
Please follow the steps to apply for service credit.
* Send an email with their name and phone number to
info@mediahubcodes.com to receive their unique pin code.
* Media Hub customer service will verify their service and send them a
text message with the PIN to the phone.
* Once received the customer must access Media Hub service on the phone
to activate the promotional credit.
* PIN codes are sent within 5-7 days.
After sending mail for media hub credit:
* You will receive a text message in 5-7 days that includes a PIN that
allows you to activate the service credit.
* You must activate the credit through the phone.
* Go to Samsung Media Hub payment screen, select Gift Card tab, and
enter the PIN code.
* You have 60 days after activating the credit or until 3/31/11
(whichever comes first) to use the credit.
We value your business and appreciate the opportunity to answer your
questions.