PortaMart — I whant to return my money

I hav paid money Rs 164 rupees by sbi masrocard.
My order id 118039,
after few days .i recive a mail,
" Dear Customer,

You have ordered "Flip Cover for Karbonn A19- Black", But the item is
not in stock. But the following item is available in stock in same
price.

"Flip Cover for Karbonn A19 - Universal-Black"


But i cant, purchase other flip civer.So return my money