I seem to be having similar problems to others that signed up with Google Checkout. Unfortunately at the time it was the only credit card-based payment option. Google Checkout informs me that my CC has been charged.
My account (signed up on 14 Feb) is still pending.
I have now opened 3 support tickets (over the course of 3 days): the first asking when the account could be approved, a second with an escalated urgency, and a third asking for either the account to be activated or a refund to be issued.
I have received no reply to any support tickets.
I am therefore asking through the forum for the account to be activated or for a refund to be issued.