Frankly, this is only about as far as I’ve had to go to get dollars knocked off my bill, typically for a year. And when the year is up, I go through the same process.

However, if none of this works, there is till one thing you can try.

Write to the president of the company and explain the situation, and how you want to stay with the company. (You can find contact information on your bill or the company website.) Relate how you’ve negotiated with the sales agents, who did a good job, but that you understand how their hands are tied. This is where you can use the notes you’ve taken, because it’s helpful to be specific with dates and times.

Be concise and confine your letter to one page. You’ll be writing someone who has to go through many letters in a day. State clearly that you would like a discount and how much you would like, but always ask for more than you expect to receive. Don’t forget to hand-sign your request. Add a hand-written PS, reiterating your request. Recipients typically read the PS part of a letter first.

Let me know via the comments how this process works for you, or if you have any additional suggestions.