If you've received the wrong size, please check the order you placed with us. We've seen in most of the cases that the wrong size if selected by our customers when they place the order. In cases like those, please contact support so that we can guide with the process of exchanges in this case.
If you ordered the right size, but still got the wrong one, we'll be more than happy to send you a free reshipment :) Just let us know with a picture of it and we'll be there to get it done for you.