Good delivey let down by double billing and no response on attempts to get a refund

Ordered a lovely bouquet from Netflorist, was delivered on time and very well received by the recipient. Sadly however, Netflorist deducted the amount twice from my credit card. The only email address available on the website is their "orders@netflorist" one, I emailed this twice over the course of a week, not a single reply. Seems like they are good when taking your money - not so good at returning it. To date I am still waiting.