Preserve the advertisement, messages, estimate, work order, invoice and payment record, then compare what was quoted with what you actually authorized. Minnesota Attorney General consumer guidance recommends checking business identity, getting a detailed estimate, avoiding a blank work order and obtaining an itemized receipt that separates the service call, labor and mileage. Those documentation steps are useful, but they do not decide whether this invoice is unlawful.
Ask the business in writing to explain each difference, including added parts or destructive work, and retain the response. If the matter is not resolved, ask the consumer-protection office for your state about its complaint route and ask the payment provider about available dispute procedures. Deadlines and legal remedies vary, so do not import Minnesota licensing rules or treat this page as nationwide legal advice.