I had a quick chat to accounts and while you have been double debited, all charges are valid. The initial invoice is for the subscription fee,
the service was created on 31-05-2013 at 23:03 so it fell into the next billing cycle hence the invoice was not prorated.
Add the late debit order processing due to a fault in the batch as well as the lack of funds, the system made a mistake on your account.
A refund will be processed on Monday 8 July 2013.
I have also authorized one month free (August 2013) to compensate for the billing problems that you experienced. You will still receive an invoice for August but it will not be debited from your account.