Purchasing a book

Hi all, 

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Greeting all, 
i have purchased a book from bentley store named wastewater collection with my Visa and the money withdrawn from my bank account then the store keeps reloading and it tells Error, after that i received mail contains the following
​ i click on View Your complete order details 
it said we didn't recognize your order 
if anyone knew what is sitecore.net which i have had received a mail from them no_reply@sitecore.net