Complaint Review: Shop Tide

This  website from china sells designer sunglases, belts, handbags, clothing etc  and is very cheap. They give you an option to pay in either Australian, US, Canadian, Euro or Brittish Pounds .  But they charge you in U.S Dollars without your knowledge from your bank account. At no  time at any point of sale  or even written anywhere on their whole site, do they mention that all transaction are in U.S Dollars . Nowhere. So being an Aussie,  My order was $55.50(AUD)  , they sneakiliy hit my bank account for $74.53(AUD)   They  overcharged me by $21 . I have emailed them atleast 6 times and they don't answer my questions, all I get is a copy/paste reply they send to all 'customers' saying thankyou for shopping with us, please get your friends to shop too etc...  I'm sure they rip everyone off , so if you're paying in USD , I bet they'll charge you in EUROS or Brittish Pounds, whatever is higher than your own currency.