I ordered something for my gf, and it was defect. So I returned it and requested a refund for everything (including shipping), and they actually refunded everything!!
The item I bought was defect. so I requested for a full refund. If size was the problem, they will still charge shipping. I highly recommend you to check your items carefully before you accept them. This is actually my second time getting some defect item from APC. I have been their customer for at least four years, and their quality has gone down significantly.