@ Oplok
I would be glad to assist you recover your missing Windows Live Hotmail contacts. Please reply to this post and include your e-mail address and at least three deleted e-mail addresses from your account’s contacts list. This is done to ensure that we will only be disclosing account information to the account’s owner.
Moving on, I recommend that you ensure your account’s security. Please take a look at MSFT Scott H’s Solution Article “What to do if you think your account has been stolen” as it provides helpful tips in keeping your account secure.
http://windowslivehelp.com/solutions/accounts/archive/2008/10/25/what-to-do-if-you-think-your-accounts-been-stolen.aspx
I also suggest that you check out MSFT Roopa S’ Solution Article “Recent reports of Account hijacks”.
http://windowslivehelp.com/solutions/safety/archive/2009/04/29/recent-reports-of-account-hijacks.aspx
For assistance with your missing Windows Live Messenger contacts, please get in touch with the Windows Live Messenger Technical Support Team. To get in touch with them, please visit MSFT Roopa S’ Solution Article “How to get support for your non-Hotmail Products” and follow the steps below.
1. Go to http://windowslivehelp.com/solutions/newvisitor/archive/2009/02/04/how-to-get-support-for-your-non-hotmail-products.aspx
2. Click on the link beside Windows Live Messenger, this will redirect you to the Windows Live Messenger Help page.
3. On the Windows Live Messenger Help page click on any topic on the left panel, and then wait for the page to load completely.
4. Click "Get more help" on the lower right corner of the page, then click on "Get support."