demon and dns

Demon just cannot be trusted to do anything right. For the second time in about two weeks they've screwed up dns changes. The last time they took ownership of dns for our work domains but didn't put in ANY a records so all our servers disappeared off the internet for about 6 hours. This time they have not changed the records to new ip address's so we are unable to switch from leased line to (static) adsl connections as planned (and announced to customers) at the time we had agreed. They should have been changed last night and I was going to go in early and move firewalls - now I've got up early for nothing and i'm grumpy :-(