Customer with online Sales

I have had 2 issues with Under Armour I returned shoes and asked for a different size and without telling me why, my order was cancelled and my money returned I tried to order again . The Promo came up where it said if you buy 2 pairs of Womens Charged Pursuit 3 , you pay R999 and it will be adjusted at Check Out I queried why this was not happening and the support said they would get back to me . This has not happened, I am still waiting for a reply from support for both of my issues , The customer service is somewhat lacking . At this rate I probably am never going to buy Under Armour shoes !