Contract extension done incorrectly

Short answer, you don't. They don't have an option to correct/remove a contract date. But why do you think it was done incorrectly?

If you did a warranty replacement (like for like, exact model line), but was activated as an upgrade in error, then they have a process. Agent notes account about situation. If you cancel during that 24 months the cancellation agent reviews notes, or researches the situation if it wasn't notated to verify like-for-like, and submits a waiver request on the ECF for it being in error.

So they have a process to address the consequences of a service agreement in error, but no way to straight up remove it in that situation. I definitely don't like that, but that is how it is setup.

Hi, @TBS. We're sorry your contract was extended incorrectly. We'd like to uncover more details about it, we'll send you a DM. Christian, DIRECTV Community Specialist

The extension was done as an equipment upgrade, but it was an exact replacement. A technician suggested we try it to fix an issue we are having. We let them replace it and the issue was not corrected. Several employees admitted it was just a replacement, but would not fix the one year 

contract extension. Are you saying I can cancel in the original 24 month agreement time frame and they will contact me about it? 

We're sorry for any inconvenience caused by this. We'd like to take a closer look at your account to provide you accurate information and address all of your concerns. We've sent you a DM, please check your inbox. Christian, DIRECTV Community Specialist

@TBS 

Upgrades are a 24 month service agreement, not 1 year. Though it goes from the day it was activated, not the end of any existing agreement.

It is not they would not fix it, they cannot because it is hard built in the system. And warranty replacement turned into upgrade is the most common reason for this issue, too common in fact.

If you cancel before the end of that new agreement, the cancellation agent is supposed to submit an ECF waiver request after verifying (by notes or their own research) that is was supposed to be a warranty replacement. They do not contact you about it as that is all done during the call in which you cancel.

When you say "exact" replacement, was it the exact same model number? If not, what is the model of the old box and the replacement?

Thank you. It is good to understand as none of the employees on the phone could explain. They just said when we agreed to try the replacement it was considered an upgrade although it was the identical model. 
It was a Genie DVR replaced with another 

Genie DVR. And I did provide the serial number to one person. 

Serial number doesn't matter as that is unique to one box, not shared with another. So only model number is what is important.

Be aware there are 3 "Genie" lines. So must be same line for like-for-like

Genie: HR34, HR44, HR54 (including revised HR54R1)

Genie Lite: H44

Genie-2: HS17

Same concept applies to Mini Genie Client.

Mini Genie: C31, C41, C51, C61

Wireless Mini Genie: C41W, C61W

4K Mini Genie: C61K

Gemini: C71KW (is a Client, but vastly different capability so isn't technically a Mini Genie though similar).

As long as same model line, then if you cancel before the end of the new agreement the cancellation agent just follows the waiver request. Really wish they would have a correction option to begin with, but they never programmed a way in their system.

That's right. Thank you for your input @Juniper. 
We appreciate you clarifying your situation @TBS. Once the order is done, you'll be introduced to either a 12 or 24-month agreement depending on whether it is drop-shipped or installed by a technician. DIRECTV appreciates your understanding. Christian, DIRECTV Community Specialist