If you realize immediately that your order is incorrect, please place another order for the correct cartridges and email our customer service center at customerservice@houseofinks.comexplaining that you need to cancel the incorrect order. If the product hasn't already shipped, we will cancel the incorrect order and ship your correct order only. If your order has shipped, or you receive your order and realize you ordered the wrong product, please contact our customer service center at customerservice@houseofinks.com to make arrangements to return the incorrect order/cartridges back to us. Please make sure to place a separate order for the correct cartridges, we will take care of your incorrect order regardless.