Be clear and specific about service expectations : what is needed and what is not needed.
Use globally accepted standards of quality.
Shorten feedback and try to see output on a frequent basis.
Do not assume that ‘no news is good news’.
Reward the desired behavior. When you feel that the level of service is good, express your satisfaction
Make sure that the common language used (usually English) is well understood.
When calling for service with a service center e.g. a telephone company, ask for the name of the person and call him by his name. Write down you spoke to and of which department.