shocking service

I purchased a number of shirts online and did not receive one of the shirts that I had ordered. Under Armour had indicated that all was delivered to me and after I called them, they then indicated they had no stock of the one that was not delivered. I then requested for a replacement which took me three calls to them to find out what was happening as this had not been delivered and eventually me asking for a refund. I have now called there 8 times and I keep getting feedback that my refund has been processed but have not received anything. I will NEVER purchase another thing off this website. The service is shocking and a shame for this brand.