Excel Text Cleanup & Deduplication

I have an Excel workbook packed with text-only entries—names, addresses, and general descriptions—that now suffers from duplicate rows, uneven formatting, and the occasional spelling slip-up. I need the file returned in a polished state so it can feed directly into a mail-merge and reporting workflow without surprises.

Here’s what I expect you to handle:

• Removing duplicates across every column so each record appears only once
• Correcting formatting issues such as stray spaces, inconsistent capitalization, or broken line breaks
• Fixing spelling mistakes while leaving brand names and proper nouns intact

Deliverable: the original workbook cleaned and saved in .xlsx format, plus an optional second sheet or change log highlighting what was modified or removed. A quick turnaround is appreciated; accuracy is essential.