I only offer refunds within 24 hours of a deposit being paid. Otherwise, deposits are non-refundable and the work I complete for you isn’t subject to refunding if you’re unsatisfied.
But this does not prevent me from offering discounts if something is amiss. If I’m late in delivering a project, I offer a 5% discount per day I’m late on the final invoice. So if I’m 3 days late, that’s a 15% discount!