Aye, it's a racket.
Last year they put the deposit down for the place, was told it would take a month or two to finish off (they were very newly built, with 'just the electrics' to fix), it got to June/July time and they still hadn't moved in. The final straw, and what shows it wasn't just them that they were dicking about, was when the company told them the annual maintenance fees would have to be raised due to the number of purchasers dropping. My friends promptly told them to get fucked and pulled out, the company who actually did the build rang to ask why they'd pulled out and basically sold the estate agents up the river for being lying cunts.