Weekly Customer Details Excel Update

I need assistance in managing my customer details excel file on a weekly basis. The updates will come from a CSV file.

Key Tasks:
- Add new customers from the CSV
- Update existing customers, including their contact information, purchase history and account status
- Delete obsolete customers

Ideal Skills:
- Proficient in Excel and CSV files
- Attention to detail
- Experience in data management and customer relationship management (CRM) tools.