When I switched to BT just over a year ago, the call centre staff repeatedly lied that my installation had been booked. They scheduled switching over my broadband but didn't bother to arrange to connect me.
Eventually I got an English bloke who took over my account, told me to ignore everything i'd been told. I was without internet for 2 frigging weeks.
£6/day is nowhere near enough for that sort of thing. If it's their fault you lose connectivity during a switchover it should cost them £100/day. That should focus minds.