Request a meeting with your supervisor, so you have time to talk it out professionally. Present it as being concerned about being able to do your job efficiently. Explain that when changes in protocol are not communicated properly, you can't do your job correctly, which means that you end up having to waste time redoing things. Make a written list of specific examples and also possible solutions (ie-have changes communicated in writing, etc.).  If you present it as something that affects the bottom line as opposed to being a personal issue, your boss will probably be more willing to address it. Good luck and let us know how it turns out.
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