Wirefly.com Inphonic Exchange Scam $250 owed? NOT! Largo Maryland

I recently returned the motorola v3 razor I purchased on wirefly.com because the unit would not function. After arguing with several people and being hung up on twice. I finally gave in and mailed the phone back via 2 day fed ex. Hoping that the fast they receive the phone the faster the exchange return would be. I called today and my exchange was escalated to activations. Later in the day I recieved the following email:

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Your order, has been approved for service with (DELETED TO PROTECT THIS COMPANY) and we are ready to ship your new wireless device. However, we are unable to process your current form of payment.

Please respond today to complete your order:

ONLINE: Go to http://www.whereismyorder.com and follow the easy instructions to update your payment information. Your wireless device will ship shortly thereafter.
BY PHONE: Call us at (866) 424-3946 to speak directly with a representative to update your payment information. Please have your order number handy.
If you have additional questions, please visit http://www.whereismyorder.com for detailed order information.
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I go online and check my order status to find out that they have found it just to attempt to charge me $250 for not keeping the terms agreed to in my purchase discount or some bs like that.

That agreement is as follows:
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Important Information Regarding Your Equipment Discount
Your price paid includes an Equipment Discount of $250 that has been provided to you by this AT&T authorized agent for activating a new non-substitute line of service with AT&T, and maintaining this line of service with the selected rate plan in good standing for a minimum of 181 consecutive days.
By accepting this Equipment Discount, you agree that for a period of 181 days after your new equipment is activated, you
will pay your balance due to AT&T each month
will not disconnect this AT&T line of service
will not transfer this equipment to another AT&T line of service
will not change your AT&T service rate plan to a lower monthly service rate

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From what I can read I have not broken this agreement in any way! I cannot wait to have another battly royale in a few hours with some eastern indian who does not listen.

Scottie
albuquerque, New Mexico
U.S.A.