Ask the Test Maker

I am experiencing problem while registering for GMAT. After some unsuccessful attempts to pay for the exam it now shows "Block Error-We're sorry, there is a problem with your GMAT account which requires you to speak with customer care. Please visit www.mba.com/contact to find the appropriate phone number.".

Candidate Details:
Name: Raghav Kanotra
Email id: [email protected]
GMAT ID: 100003316169
Country: Dubai,UAE

I have tried calling the EMEA contact number, but unfortunately am not able to connect.
Kindly support by resolving the issue.

Regards,
Raghav Kanotra