I have lost a couple of regular maintenance jobs in the last month and that brings the total to 3 in the 5 years I have been doing this job. One didn't give a reason but the other two said that they were not happy with the work. I know that logically I have hundreds of very happy customers over the years and can easily replace the lost jobs but just having one person say they are not happy bugs me for a few weeks.
How often do people loose a regular maintenance contract? Do you ever try and argue your case or just move on?