今ccleanerに契約したのですが請求金額が何かの間違いで違っています。どうすればいいのでしょうか。
This is a user forum. We do not have access to accounts/billing here.
You will need to contact support for account issues.
You can raise a support ticket by using the form here: CCleaner Support Community
However you should note that support are slow to answer these days and it can take a week or more for a registered customer to get a reply.
Further you should note that the automatic support queue works off email addresses.
If the email you use when sending your request to support is not showing as registered to a current valid licence then you will not be seen as someone who has (currently) paid for support.
As an apparent ‘non-payer request’ your request will be non-priority and it may be a very long time (month or more) before the computer even shows your request to a support person.
PS. Sending more requests will not help - in fact it will slow a response down because each time you send another they all get automatically collected together as ‘further information’ and sent to the back of the queue again.