When did you have your installation?
We've had two lines off and on for a few years. The previous reconnection was £30 about 10 years ago. About 3 years ago we wanted it reconnected again and were told it would be £130. When I queried the cost the person said it was "swings and roundabouts", brand new lines, boxes, etc cost £130 and they lost money, simple reconnections cost £130 and they made money. It all evened out (for them).
I therefore got Virgin Media to install a line and got very cheap broadband.
Since then a "return to donor" for £30 and an 18 month contract appeared.
Was Eclipse Home Option 1 & VM 2Mb
Now O2 standard