Paulo you can send the money via your own bank account to Conitec's account. That or you can go in the city to a bank like Western Union or something and make the payment there which could cost a little more. Before you proceed better to contact Conitec and ask them via email/phone for all details your bank might need in order to process the transfer.

The cheapest way to purchase A7 is with Credit Card. If you don't have one, maybe someone in your family or some friend does? Then let him do the payment and set your personal details at Shipping. That's it!

Note: Shareit have more payment options such as Paypal if i'm not mistaken. However, you'll need a credit card to open a Paypal account. So..