How can I verify suspicious activity on my Apple Account?

Apple Approval Notice

We have noticed that your Apple iCloud id was recently used at "APPLE STORE - CA" for $143.95, paid by Apple Pay Pre Authorization. Also some suspicious sign in request and apple pay activation request detected. That looks like suspicious to us. In order to maintain the security and privacy of your account we have placed those request on hold. Your Photos, Data, Bank Information and Cards are at risk. If NOT you? talk to an Apple Representative. Failing may lead to auto debit and charge will not be reversed. Call +188******05 immediately to cancel this charge.

Billing Department : Subscriptions and Billing - Official Apple Support

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[Edited by Moderator]