£3,000 for BT to install phone line? !!!

I have recently purchased a bungalow. Originally there was a house with an enormous garden, and about fifty years ago a bungalow was built halfway down the garden, accessed by a narrow drive between the houses about 30m long. This was recently acquired by a developer who extended the bungalow and divided it into two and is builiding a third bungalow next to them. I bought the bungalow created when the first one was divided.

The original bungalow had one phone line, which has been taken by the other bungalow which was bought before I bought mine. My tenant has asked BT to install a phone line for him. After promising him free installation, they now say it will cost about £3,000 as a new line has to be brought in about 40m from the road. Presumably once it’s built and sold the owners of the third bungalow will be in the same position and might share costs.

Is there no responsibility on the part of BT to provide the new line for free? 

Surely they will benefit for many future years?

It seems they have a monopoly as you can’t employ anyone else to do this work!

Any ideas anyone?

Edna