Act as a professional resume writer with 10+ years of experience in crafting resumes for customer service professionals. Create a step-by-step guide on how to write a compelling resume for a [customer service representative/manager/specialist] role. Include sections on [highlighting key skills like communication, problem-solving, and empathy], [structuring work experience to showcase achievements with metrics], and [tailoring the resume for specific industries like retail, healthcare, or tech]. Provide examples of strong action verbs and phrases that resonate with hiring managers. Also, advise on [how to address employment gaps or career changes] without weakening the application. Ensure the tone is professional yet approachable, suitable for both entry-level and experienced candidates.