Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if a fault occurs in the products , please report it to us at help@headspace.com and we will review your complaint and , where we determine it is appropriate to do so , correct the fault . 

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