ログインできなくなりました。

ログインのユーザー名を間違えてロックが掛かりログインできなくなりました。ロック解除をしてもらうようにメールをbet365に送ったのですが解除できませんでした。どうすればよろしいでしょうか？
以下の文書がbet365からのの返信分です
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Your email to us has been assigned tracking number: 27488065 – Please do not remove.

Dear Mr Nagayama,

Thank you for your email regarding your account.

I am sorry to hear that you are unable to log into your account currently and would be more than happy to assist you today.

Having reviewed this for you, I have located your active account however, this is under the username Toshiki0730.

If you have forgotten your login details, you can use our Lost Login facility, available on web, mobile and tablet.

Web
To access the Lost Login facility via the web, please select Lost Login?

Mobile and Tablet
To access the Lost Login facility via mobile or tablet, please select Log In, then select Lost Login?

By entering the email address registered to your account, your four-digit security number and date of birth, you will be able to create a new password for your account or recover your username.

The four-digit security number is a number that you selected when you opened your bet365 account. We ask you to provide this before any action is taken on your account to ensure we are corresponding with the account holder. You have confirmed this correctly as 0730.

Thank you for your cooperation and continued patience in regards to this matter.

Should you experience any further difficulties or have any further bet365 queries, please do not hesitate to contact us.

Our team are available 24 hours a day by Live Chat, via email support-eng@customerservices365.com or call +44 1782 684757 and we will be pleased to assist you.

Kind regards,

Natasha W
The bet365 Team

bet365 is committed to Responsible Gambling. To assist you we offer a range of advice and account options to help you manage your gambling. For more information, visit the Responsible Gambling section of our website.