I managed to get a full exchange - nice comfortable shoes
I too had a problem with the shoe sizes being half a size too small. So I asked for an exchange. They did say keep the shoes and accept a partial refund, which would have been reasonable if I had time to sell them to get my money back. So I said no and pushed for a complete exchange, which they accepted. At no time were they rude or unprofessional. The reason I persevered is because I bought their seamless inside items, which are extremely comfortable to wear.