Thanks to both of you; I've actually managed to get out of the TT problem by simply telling them I no longer wished to use their service. Because the broadband hadn't been connected, I wasn't tied in under LLU, so it was just a case of asking them to cancel the broadband order, and finding another supplier who would take over the phone line and connect me onto Internet. No doubt there'll be a cancellation fee but I'm not too worried about that; I just wanted to get away from them.