The fastest way to ensure you get what you want is to return the item you have, and once the return is approved, make a separate purchase for the new item.
Sida ugu dhakhsaha badan ee lagu hubiyo inaad hesho waxa aad rabto waa inaad ku celiso shaygii aad haysay, isla markaana marka la soo celiyo la aqbalo, u samee iibsi gooni ah sheyga cusub.