Can you refund heroes in For Honor?

Can you tell me if it's possible to refund heroes in the game For Honor? I've heard mixed opinions on this topic and I'm wondering if there's a definitive answer. I've invested quite a bit of in-game currency or real-world money into purchasing certain heroes, but I'm now reconsidering my choices. If refunds are indeed possible, what's the process like? Do I need to meet certain requirements or go through specific steps to get my money or currency back? I'd appreciate any clarification you can provide on this matter.