I sympathise with you here Martin. If you weren't informed of the unusual wiring the OR engineer had used you would be completely in the dark.
As has been "agreed" by the responders here though, there doesn't seem to be a solution. OR will just say "that's the way it is". If there isn't a spare pair, there isn't a spare pair. The phone service is fixed and there is broadband at rather more than 28.8kbps.
My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost
. Internet connection -
IDNet Home Starter Fibre. Live BQM
"Where talent is a dwarf, self-esteem is a giant."
- Jean-Antoine Petit-Senn.