how to be charged only £10.90 a month line rental with BT as one off £129.00 payment per annum
first login in to your my mybt account online if you dont have one register your landline and create one
once logged in to your mybt account make your you have paperless billing and while your at it turn off other uneeded unused call features because BT will charge for something even when they know you haven’t been using that feature.
which will take you to bt’s line rental saver page
then click the pink button that says “Get line rental saver” looks like this
get BT line rental saver
follow the instruction