OmySalon review for Hulk Volume Discount Bundles

There is a big bug in the function. Sometimes the discount can be displayed during the settlement process, and sometimes it cannot be displayed. This is because only a few of my website orders have used this discount, and more eligible orders cannot use the discount. It's been a week and the problem is still not resolved. Then the fee was charged. I am very dissatisfied. Can you refund the fees for these days?