Final answer:
The Channel Finder is a tool designed to help customers locate specific television channels across different service providers' line-ups by entering their location and provider details.
Step-by-step explanation:
The tool used to assist the customer in locating channels, when the channel number is not the same with all providers, is called a Channel Finder. This tool is designed to help customers easily navigate through different service providers' channel line-ups to find the exact station or program they are looking for. By inputting their location and service provider into the Channel Finder, the tool provides the specific channel numbers available in their area.