Sprint: Out of Contract: What's best deal I can get to extend? $ credit to balance?

[tt C6]

I am out of contract.
Sprint is erroneously showing my "ugrade" date being in October.
(I've never upgraded my phone in 4 years.)
I don't care, becasue I want a "EVO with slide out landscape keyboard" and I don't see it happening anytime soon.
If I buy an Evo outright, it's $450.
If I extend my contract 2 years, Sprint will give me a $250 equipment credit.... UP FRONT.


So, I called up Sprint customer service and was escalated FOUR times.
I finally got a call back and repeated my offer to extend my contract 2 years in exchange for $250 in service credit to cover my balance.

They told me they would give me $20 off my monthly bill for the next 24 months.
I said, "You give the $250 equipment credit up front, SO, I want the $250 service credit up front".
They said "no."

I said I could re-activate my old phone with Verizon and get $240 credit in exchange for a ONE year extension.
They told me take the $20 a month or nothing.


Frankly, getting a $250 credit for a ONE year extension seems fair now.

The lady who called me back after I was escalated FOUR times gave me a TON of attitude.
She claims that any of my future calls to Sprint will be automatically forward to HER ONLY and that I will not receive anything more than offered.
Verizon is offering me a $240 CREDIT in exchange for a ONE YEAR contract.
With my corporate discount with Verizon, the price ends up being the same as a Sprint Unlimted plan.
Sprint has refused to apply my coroporate discount on my account because they claim "unlimited plans are not eligible for corporate discounts".
So, I want to get Sprint to match the Verizon offer for my service credit, or unfortunately I'm going back to VZW.

Any help getting Sprint to apply a service credit to my account in exchange for a contract extension would be MOST appreciated.

Thank you.