Maybe this will help someone.
My situation:
Customer for 1 year, 9 months or so.
Still under original 2 year contract.
I've never called with problems or upgrades before this.
I'm on the Choice Classic Extra plan
I have no Premium Channels
The deal I got today:
Free Sunday Ticket
Free Showtime for 1 year
Free Starz for 6 months
$15 off my bill per month for 1 year
Had to renew my contract for 1 year starting today
What I did:
Called and said "cancel service" in the menus. Got a rep and asked him to look up the fee for canceling my service. He asked why. I told him I see ATT is offering a $45 package (roughly half what I'm paying now), and I get a bunch of premium channels and Sunday Ticket for free.
He came back with $40 as the cancelation amount, and I told him I was happy to hear it's so low because I'll come out better in the end after canceling. I'll save a lot of money moving to ATT.
He went on for a bit and eventually told me he could give me Free Sunday ticket and $15 off my bill. I said that's really generous but I still get the better deal with ATT and some premium channels. Plus I still get DirecTV's quality service. He said he could offer the Showtime/Starz deal.
That's the deal I took and I'm very satisfied with it.
Good luck Bills fans!