http://www.icann.org/faq/#domcust
If I have customer service questions or problems related to my domain name registration, whom should I contact?
You should contact the registrar that registered your domain name.
* How do I find out who my registrar is?
* Find registrar contact details in the Accredited Registrar Directory
If I'm having a problem with my registrar, should I report it to ICANN?
If you have a problem with one of the registrars, you should first try to resolve it with that registrar.
If you cannot resolve your complaint with the registrar, you should address it to private-sector agencies involved in addressing customer complaints or governmental consumer-protection agencies. The appropriate agency will vary depending on the jurisdiction of the registrar and the customer.
All registrars with direct access to the .aero, .biz, .com, .coop, .info, .museum, .name, .net, ,.org, and .pro registries are accredited for this purpose by the Internet Corporation for Assigned Names and Numbers (ICANN). ICANN does not resolve individual customer complaints. ICANN is a technical-coordination body. Its primary objective is to coordinate the Internet's system of assigned names and numbers to promote stable operation.
Although ICANN's limited technical mission does not include resolving individual customer-service complaints, ICANN does monitor such complaints to discern trends. If you would like to submit a complaint about a registrar for ICANN's records, please use the Registrar Problem Report Form located at the InterNIC website. As a courtesy, ICANN will forward your complaint to the registrar for review and further handling. (Please note that there is no guarantee that the registrar will reply.)
* Find registrar contact details in the Accredited Registrar Directory
* Submit a registrar complaint through the Registrar Problem Report Form
My registrar won't let me transfer my domain, what do I do?
If you're having trouble transferring your domain from one registrar to another, you should contact the registrar you want to transfer to for assistance. If your preferred registrar is having any trouble processing your transfer, your registrar can obtain assistance from ICANN or the registry operator as appropriate.
Registrars are not permitted to deny transfer requests arbitrarily. ICANN has no policy that permits or requires registrars to deny outgoing transfer requests solely because the registration is within X number of days before expiration. In any case where a "losing" registrar does deny a transfer request, it is required to provide the "gaining" registrar with a notice of the denial and a specific reason for the denial.
For your reference, the "Policy on Transfer of Sponsorship of Registrations Between Registrars" is set forth in Exhibit B to the Registry-Registrar Agreement. For details on updates to ICANN's transfer policies, please refer to
http://www.icann.org/transfers/