Refused to pay my refund

Terrible experience and I don't trust these fictitious "good" reviews. When you return an unused brand new product you are charged 15% handling fee, which in my opinion may well be *******. Its an online store so they further deduct return shipping costs even if you bring the item back yourself. They are running a **** because online store has a higher rate of returns than physical stores so they aim to profit from courier and this ******* handling fee, which they do not have proof that the client is aware when purchasing their items.