Scheduling of the appointment was a complete disaster. Called and was promised someone would be there between 10 and 2. At 1pm someone called to say they were delayed and it would be before 6pm. At 5pm someone called to say they couldn't make it today and it would be the following morning giving again a 4 hour window. As I had waited in all day and they had missed two slots I tried to get a more specific time but the lady who called me was particularly unhelpful. She promised the engineer would call 30mins before but he never did. Once someone eventually turned up he was competent and efficient. Shame the same could not be said of the appointment process.