I hope you sent or have sent the right book .
I used past simple because before replying to them I received this email"Your order was sent yesterday" so I am wondering if they sent the right book. I think past simple is better because the action, at the time of my reply, is completed and belongs to the past.
But would it change if the email received was "Your order has been sent" could I use in this case present perfect
May be both are ok