I ordered tickets for Wicked yesterday via ATG tickets (the booking company on the Victoria Apollo website). Soon after I was notified my transaction didn't go through. I was given a reference number and a phone number to call that would charge me 7p/minute to sort out. My bank showed the money was pulled and then replaced by ATG. What is a 7p/min telephone number? Has this happened to other people?
a quick search of the ATG website reveals it's a number for UK customers which costs, surprisingly enough, 7p per minute
you may wish to use the option for overseas customers
http://www.atgtickets.com/customer-care/contact-us/
it's likely your bank blocked the transaction
I had the same issue when I tried to order for Les Mis. It showed as pending twice on my online credit card statement, but the bank actually had declined it. I've had this with other purchases, both in and out of the US. I used a different card and it went right through with an email confirmation following in just a minute or two.