Looks like they is letting me go

Hmmmm never offered me anything before when I've threaten to leave. any advice before I make the call?
(Like shovel your overpriced broadband up your [censored] coz I've been paying for your newbies for years, being
Market 1 and all that! )
The following comment was added to the Question
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Thank you for getting in touch. I'm sorry to hear that you're thinking of leaving us. To discuss this or what we may be able to offer you to retain you as a customer, please speak to our Customer Options Team. They are available as per below:
0800 432 0200 or on 0345 140 0200
09:00 - 20:00 Monday to Friday
09:00 - 17:30 Saturday
Should you wish not to call to cancel your account, the only alternative would be to send us a letter to the following address:
Plusnet, 2 Pinfold Street, S1 2GU
Please remember to include your username in the letter so that we can allocate this to your account.