Could everybody (particularly client-facing people) make sure that you have personalised greetings on your voicemail (both landline and mobile). When clients call they need to know they've reached the right person. There are still a load of people that that haven't bothered to change the factory setting! It just makes us look unprofessional.
Additionally, can you make sure that you enable your 'out-of-office' auto-reply when you're on holiday.
I will be spending 4 hours, each day, ringing everybody's mobiles and landlines to check. I might even consider visiting your dwellings at the weekend to see how courteous you are when you open the door.
I thank you.