U-Switch offer for Plusnet Broadband and phone.

[#1]

'Online exclusive Black Friday Sale'...'in partnership with u-switch'.
Aparently, if I weren't already a customer I could get broadband and line rental for 12 months with no further commitment for the equivalent of £6.74 per month (taking the line rental saver option and cashback).
Can plusnet honestly say that such offers are not subsidised by existing customers?
I do not think there's a suplier anywnere offering just line rental, let alone 'with unlimited broadband, for this price.
https://www.plus.net/offers/1415affoffer11/?WT.mc_id=aff_003drq&affiliate=uswitch
Are you really trying to make customers leave in order to come back for a good deal?

[#2]

Hi w23,

Quote

Are you really trying to make customers leave in order to come back for a good deal?

No, we have entirely separate processes arranging offers for new and existing customers.
If you'd like to see if we're able to offer you anything better I'd have a chat with customer options.