Charges I don't recognise

The link gave you 3 options that you have not done by your screenshot:

1. Go to the report a problem website and sign in.
2. View the email that was sent to you
3. Contact Apple through the provided link

If you did all the steps, what did Apple say. The screenshot you provided was not the report a problem web site that lists your purchases when you sign in at that page.

Your answer will be available by following this link:

If you see 'apple.com/bill' on your billing statement - Apple Support

If you used the link provided in the third option to Contact Apple, you have a choice to Chat or Call if you do not see the charges listed at the report a problem website or by an email. You would need to provide them with the order number that appeared on the previous screenshot you provided.