we are using payu in our "MAGENTO" site :
payu is "payment method" in india as like paypal.
It's really strange that payu official code did't work well
after customer buy the product, than he went to "checkout" page ,
he click on "place order" button , after that it will redirect to "payu site"
he did't paid money but he can close the payu site without paying, but than also we will recieve the "order".