There is a word document AccountAdministrationFAQ which has the following FAQ:
How can I find out who my company’s CustomerSource Administrator is?
Please contact your Microsoft Dynamics Partner to find out who your CustomerSource Administrator is.
OR
Send an email to one of the Regional Operation Centers. Please provide First Name, email address, Legal Company Name and MBS Account number to assist the Operations team in creating the CustomerSource account.
Below you will find the email address for the Regional Operation Centers.
Regional Operation Center Contact Detail :
For Asia Pacific, contact: mbslques@microsoft.com
For Europe, Middle East and Africa contact: mbsquery@microsoft.com
For America’s, contact: mbsorder@microsoft.com
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After sending mail to microsoft this is what they replied:
Upon further checking, we found out that you are a customer and not a partner. Please be informed that we are not authorized to assist customers directly.
To process your request, kindly contact your Partner of Record, XXXXXXXX.
For all other queries, please contact your Microsoft Service Provider, XXXXXXXXXX.
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Now I have sent them a mail from partnersource account.