Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if we are unable to contact you using the contact details that you provided during the order process , we will treat the order as cancelled . 

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