The additional charge you pay along with the first installment is related to using the pay in 4 (installments) option.

If you decide to take advantage of this payment option you will be asked to pay a small fee for using the service.

This is charged at the time of your order along with the first installment; Subsequent installments will have no additional charges for using the service.

If you decide to apply for a full refund, the cost of the service will be refunded along with the first installment.

If you make a partial refund, however, the fee will be recalculated and reduced based on the new total order amount.