OK, I just wanted to make others aware of this since I'm banging my head against a brick wall trying to communicate with Tiscali.
So, here's the story. We had our phone line and calls with BT and happy with the service etc. Bills for phone line and calls only in my name, not dp's. DP however had an account with Tiscali for broadband. Anyway, in February, Tiscali took it upon themselves to use dp's details to transfer our phone over to them. DP got a letter from them saying "Thank you for choosing Tiscali Talk" and he phoned them up and told them that 1. he didn't choose Tiscali Talk and 2. He was not able to change the phone account as it was registered in my name. OK says Tiscali and this we thought was the last we would hear of it. A month later, DP then got a bill from Tiscali to which he called them up and told them that we didn't want our phone to be transferred to Tiscali.
Tiscali had not only taken over our line, but they had then transferred it into DP's name and as they have never had contact with me they took it out of my name, which I had no knowledge of. DP has refused to pay the bill, but then they cut off the line and it has remained this way until I transfered the account back to BT (and my name only again). Tiscali have admitted in both writting and over the phone that our line was subjected to a practice called "slamming", but refuse to discuss anything with me (even though it was my line which was stolen) as they say I am an unauthorised 3rd party .
I've tried to follow their complaints procedure but they refuse to pass my written complaint to a manager . So, I just wanted to warn others about this type of practice.