Is it possible to delete a customer review that contains wrong information?
As of January 2015, you can in Itunes Connect:
- Sign in to Itunes Connect
- Go to "Contact Us"
- Choose "App Store Questions"
- Choose "Customer Reviews"
- Choose "Specific Removal Request"
- Click on the 2nd "contact us" link. A form should appear.
- Fill in the form and push "Submit"
- Wait for Apple to contact you.
You can't simply delete the review yourself, however you can flag it for review by Apple to be deleted.
Click on Report a Concern next to the review on the App Store, then select a reason for your flag, followed by comments: