1. charged too much money for goods or services
Usage: past tense and past participle of overbill

Examples

• The contractor overbilled us by $500 for the kitchen renovation.
• She discovered she had been overbilled for her phone service for months.
• The restaurant overbilled customers by adding unauthorized charges.
• After reviewing the invoice, we realized we were overbilled for shipping costs.
• The insurance company overbilled patients for routine procedures.
• He complained that the mechanic had overbilled him for simple repairs.