Yes, we actually pick up the phone and talk to the customer or their answerphone machine
Some are text and a few are emailed. We generally run tight schedules, so alot of customers know that we are coming give or take a day, so if they are going to be away some will call us to let us know, so we either miss a clean or some want us to re-book it. Or if its access problems and they still want it cleaned, they get a family member, friend or neighbour to let us in.
We don't have a written contract for domestic customers!