Under armours communication is pathetic

I ordered a jacket online in a size medium but was to small so ordered a large again cause I was scared it runs out of stock as it was on sale. I asked for a refund on the size medium and my package was delivered in good standard back to warehouse. So the problem started. They sent me another size large jacket which i said i dont want to receive the package as the responsibility is back in my hands for it to get back to the warehouse in order for me to receive my refund this has been going on for a month so after saying I dont want to recieve the package it was delivered in anyway dis guarding my request as a customer. I feel as a paying customer they are quick to ask for a payment but cannot sort out a problem which happened from their side and takes forever to receive a refund. The communication within under armour is pathetic especially with a top brand like under armour and they are not very helpful towards a customer.