Email confirmation won't display correct value when applying gift card to order amount

[yaknowss]

I am running into an issue when a user tries to apply a gift card towards a portion of their order. The shopping cart checkout process works fine until they reach the confirmation email. For some reason on the confirmation email the order amount is displaying an inaccurate number and is adding an "(" to the order total (ex. an order of $5.00 is purchased using $3.00 with gift card and $2.00 with credit card; confirmation page displays "($1" instead of $2.00). This process works fine when you apply a gift card towards the full order. I have a feeling the problem is occuring in code lines 1576-1596. Link for file is below.

dAmtCharged = u.orderTotal();
            //dAmtCharged = dAmtCharged - ec.getPmtPlanTotal();
            if (gc.getGCAppliedAmt() > 0)
            {
                dAmtCharged -= gc.getGCAppliedAmt();
            }
            amtCharged = a.formatString(dAmtCharged.ToString("c"));

            if (isZeroBalCheckout == true)
            {
                if (gc.getGCAppliedAmt() > 0)
                {
                    amtCharged = a.formatString(gc.getGCAppliedAmt().ToString("c"));
                    pmtType = "GIFT CARD #" + gc.getAppliedGiftCardNumbers();
                }
                else
                {
                    amtCharged = "N/A";
                    pmtType = " *** Dinner Reservations don't require credit card ***";
                }
            }