Woocommerce & Sage Pay Form (Discount Line)

This is my first time using Sage Pay Form as a method of accepting payments. I am currently using a Bedrock, Sage Theme and Sage Pay setup.

However, there is an issue with the payment receipt that we are getting sent out from the Sage Pay service provider.

I have been in touch and they are adamant that this line is being added in by our current setup.

I have started to check myself, by adding the following to /woocommerce/checkout/review-order.php

    <strong>WC()->cart->get_cart_discount_total() (Get the total of all cart discounts).</strong>
    <?php var_dump(WC()->cart->get_cart_discount_total()); ?>

    <strong>WC()->cart->get_cart_discount_tax_total() (SAB but with tax)</strong>
    <?php var_dump(WC()->cart->get_cart_discount_tax_total()); ?>

    <strong>WC()->cart->get_total_discount() (Get the total discount amount)</strong>
    <?php var_dump(WC()->cart->get_total_discount()); ?>

    <strong>WC()->cart->has_discount() (Returns whether or not a discount has been applied)</strong>
    <?php var_dump(WC()->cart->has_discount()); ?>

    <strong>WC()->cart->get_applied_coupons() (Any coupons in the cart?)</strong>
    <?php var_dump(WC()->cart->get_applied_coupons()); ?>

And I was given the following results:

WC()->cart->get_cart_discount_total() (Get the total of all cart discounts).
float(0)

WC()->cart->get_cart_discount_tax_total() (SAB but with tax)
float(0)

WC()->cart->get_total_discount() (Get the total discount amount)
bool(false)

WC()->cart->has_discount() (Returns whether or not a discount has been applied)
bool(false)

WC()->cart->get_applied_coupons() (Any coupons in the cart?)
array(0) {
}

I'm wondering if there's an area that I need to start looking deeper in the code? Or could it be a Sagepay Plugin issue (because there was a discount fix early last year) and Woocommerce does update a lot. http://ift.tt/25UqrZX.

Screenshot of the discount line

via Chebli Mohamed