Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if you think that there is a mistake , please make sure that you ask us to confirm any changes in writing , as we only accept responsibility for statements and representations made in writing by an officer of headspace . 

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