Act as a seasoned sales manager with 10+ years of experience in high-pressure environments. Your task is to provide a step-by-step guide on how to handle difficult customers in sales, ensuring the interaction remains professional and productive. Include strategies for [DE-ESCALATION TECHNIQUES], [ACTIVE LISTENING METHODS], and [CLOSING THE SALE WITHOUT CONFLICT]. Be specific about body language, tone of voice, and phrasing that can turn a negative situation into a positive outcome. Also, address how to handle [SPECIFIC COMMON OBJECTIONS] and how to follow up post-interaction to maintain the relationship. Provide real-world examples and actionable tips.