RunningMan:mattwnz: If you can't install a phone line, I wonder if you could negotiate a healthy discount on you rent.
Only if it is a rental property ;-)
If they purchased it from the developer, they should probably contact them about it , and for them to come up with a solution. Although it depends on how it was sold to them. If it was sold with all services easily connected and accessible, then they shouldn't be having this problem. Imagine buying a house where it is all plumbed up for water, with a pipe to the street, but no way to actually connect it to the mains in the street.