Different discount on different payment method for each Variable Pricing

I’m using
– WordPress Version 4.1.1
– Woocommerce Version 2.3.3
– WooCommerce Discounts Per Payment Method Version 2.1.4

I have variable pricing for one product. For example:
Handbag ABC
$500 (New)
$300 (Refurbished)

The rule is:
When buy one Handbag ABC for $300, the discount should be:
– 10 percent off with Western Union
– 15 percent off with Direct Bank transfer
– No discount with credit card and others

When buy one Handbag ABC for $500, the discount should be:
– 15 percent off with Western Union
– 15 percent off with Direct Bank transfer
– No discount with credit card and others

The different here is the Western Union. One price is with 10%, another is with 15%.

So, how can I solve this ?

https://www.ads-software.com/plugins/woocommerce-payment-discounts/