If you want to return a part of your order, we will issue a new Return Voucher, or a refund to My Credit (if you’re a registered user). The rest of the amount will be refunded to your Credit Card. This could work in two ways: 

If the value of the return is higher than the value of the voucher: 
Imagine an order with three products worth OMR 2 each, having a total value of OMR 6. The order was paid for with a Return Voucher or your My Credit balance worth OMR 3 as well a Credit Card. If you return two products, your refund of OMR 4 will be split between a Return Voucher (or My Credit balance if you’re a registered user) worth OMR 3 and a Credit Card refund worth OMR 1. 

If the value of the return is lower than the value of the voucher: 
Consider an order with three products of OMR 2 each, having a total value of OMR 6. The order was partly paid for using a Return Voucher or your My Credit balance worth OMR 3 and the rest of the amount was paid by Credit Card. If you return one product, you will receive a new Return Voucher (or My Credit balance if you’re a registered user) worth the value of one product, or OMR 2 in this case.