Excel Data Cleanup & Structuring

I have a single Excel workbook filled with customer and other contact-related details that now needs thorough, professional cleanup. You will start by removing every repeated record except the very first instance, then clear out blank rows and any obvious data-entry errors.

Once the sheet is duplicate-free, I need the content fully standardized—dates in a consistent format, currency values aligned to one style, text properly capitalized, and phone numbers brought to a uniform pattern. Where columns have been lumped together (for example, full names or combined address lines) you’ll separate them, and where data is unnecessarily split you’ll merge it, so the final layout sits in well-defined Excel tables that make future filtering and analysis effortless.

To wrap up, document what you changed so I can trace your logic or quickly roll back if needed.

Deliverables
• A clean, ready-to-use Excel file
• A brief summary outlining the transformations performed