看你與他們當初簽約的服務協議的詳細內容

不要相信任何客服所言,需要依據服務合約的內容來決定....

https://www.sprint.com/en/legal/terms-and-conditions.html

然而客服的說法符合 Fair Credit Billing Act, 依據這個法規， 你有 60 days after the bill was mailed to you to report the incorrect charge.