Impossible to get a response

Great shoes but their on line store is the worst in history. They make use of Sky Couriers. Terrible. There was a mix up of order. I have to admit I did not check the order properly. Got the wrong size. I am away so could not return in the way prescribed. I tried several times to email, was ignored, tried the prescribed WhatsApp, left more than one message and tried their Webpage to get hold of them to try resolve my problem. Have had no response and am very annoyed. If you have a problem they totally ignore you. They have cost me R660. I would give them a minus 5 if I could.