Website Phone Number Scraper

I need a script that will crawl a specific website and pull every phone number it can find. I do not need emails or social media links—just the phone numbers exactly as they appear online, kept in their original local format.

The script should:

• Navigate through all internal pages, following pagination or category links where necessary.
• Extract and store each number along with the source URL so I can trace it back if needed.
• Remove duplicates automatically.
• Run without triggering blocks or throttling (a short configurable delay between requests is fine).

Please deliver:

1. A well-commented script (Python is ideal, but any language I can execute on Windows is acceptable).
2. A clean CSV or Excel file containing the final list of local-format numbers and their corresponding page URLs.
3. Simple instructions so I can rerun the scrape in the future.

I will verify a random sample of entries against the live site; matches there will confirm completion. Let me know if you need the domain or any additional site details to get started.