Google Sheets Contact Update

I have an existing Google Sheet that stores customer information, and some of it is out of date. I will provide a list containing the latest phone numbers, email addresses, and mailing addresses. Your job is to open the sheet, locate each customer row, and manually replace the old details with the new ones.

Key points:
• Three fields per customer: phone, email, mailing address.
• Manual data entry only—no scripts, imports, or validation rules required.
• Keep the current column order and cell formatting intact.
• Flag any record you cannot match so I can review it later.

Once you finish, share the updated Google Sheet (or a link with edit history enabled) so I can confirm everything looks correct. This is a straightforward task; accuracy and careful attention to naming conventions are all that’s needed.