Window replacement (broken seal) distributor says get a contract

[Edward R.]

So one of the windows in the property I finished has a broken seal.  I'm technically the third owner.  it was replaced about 10 years ago. It's an Ultimate 2000 window made by Alside.  I called them locally and he stated they are just the distributor and he can give me a name of a contractor to get a window replaced. HE said fist to try it under warranty  with Alside  They denied it based on third owner.  I have the serial number of the window and such, I don't need a contractor, just order me a damn window.

How do I get the "privilege" to order from distributors?