please give answer for these question:

1. What are 3 organizational policies, procedures, protocols businesses use for customer engagement?

2.When would a business need follow-up consideration for handling customer queries, including:Explain

• engagement escalation policy
• business rules and practices
• customer expectations

3. Explain what are the main principles of customer service?

4. Explain 3 procedures a business can use for the operation of telecommunication equipment and systems, relevant to customer service.