BT tricked me
In the Reg yesterday I learned that Caller ID is built-in to modern telephony. Yet last Feb BT started imposing a £1.75 pm charge for a service which had previously been free.
As they hadn't even notified me of this change (apparently there was a note in their free newsletter, but that hardly constitutes a change of contract notice) I complained. And they "kindly" agreed to waive the charge for 12 months if I agreed to stay with BT for the year.
Last week I received a pre-printed letter about renewing the contract and -- obviously -- this is a widespread issue. It seems plain to me that this added charge was designed to trick existing customers into signing on for an annual contract instead of their existing rolling short notice contract.
My advice to BT customers is to cancel caller ID and save £21 pa -- the volume of nuisance calls has anyway reduced following legislation.