Final answer:
The individual responsible for ensuring the existence, accuracy, and legality of information on a Managing Account Billing Statement is the accountant.
Step-by-step explanation:
The individual responsible for ensuring the existence, accuracy, and legality of information on a Managing Account Billing Statement is the accountant.
The accountant is responsible for reviewing the information on the billing statement, verifying its accuracy, and ensuring that all the financial transactions are legal and comply with applicable laws and regulations.
In the given scenario, Noel, who noticed an error on the equipment bill, took the initiative to contact the accounting department and inform them of the issue. This demonstrates the role of an accountant in identifying and rectifying discrepancies in the billing statements to prevent overpayments or other financial errors.