Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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we will make the reimbursement without undue delay and not later than 14 days after the day on which we are informed about your decision to cancel this contract . 

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. OPTIONS: ["Choice of law", "Jurisdiction", "None", "Limitation of liability", "Contract by using", "Content removal", "Unilateral termination", "Unilateral change", "Arbitration"].