Which of the following is NOT a type of account mentioned in the financial definitions?

Service Income is actually a recognized type of account related to financial reporting and income statements. It refers to revenue generated from providing services to customers, falling under the broader category of income accounts.

In contrast, Customer Satisfaction is not a financial account but rather a metric used to gauge how products or services provided by a company meet or surpass customer expectations. It doesn't have a direct representation in financial statements or accounting practices.

Bad Debt represents amounts owed to a business that are not collectible and is categorized as an expense, impacting the net income. Cash Overage/Shortage accounts pertain to discrepancies in cash handling, also having clear definitions in accounting.

Thus, among the provided choices, Customer Satisfaction stands out as the term that does not fit within the framework of financial accounts.