Taken The Payment But Deliverd Wrong Item

I have ordered a Book From Crossword.in (W: gcl: comp works of sherlock 1) and paid via SBI Maestro Card the amount of 400/-
They first said the Item was unavailable so I would be refunded. But after a few days they sent me a shipment containing ANOTHER BOOK which I have not ordered.
The Bill they have sent me Shows the item I have ordered, But the packet contained WRONG ITEM.
No one from Crossword.in is picking the phone or replying emails.