Sent incorrect pair of jeans refusal to refund

Ordered a black pair of jeans worth $220aud. Jeans that came in post was wrong color and wrong size. Called up customer service was instructed to send the jeans back and order another pair online. Refund will be processed in a few weeks. Original order was made in June. It is now September. I have had no refund. Nor feedback. I did receive an email saying that they cannot process the refund because the jeans I sent back didn't match what I ordered. The pair of jeans I sent back ARE NOT AVAILABLE IN AUSTRALIA. WHERE ON EARTH WILL I COME UP WITH A PAIR OF JEANS THAT DON'T EXIST IN MY COUNTRY, then send it back to HEAD OFFICE. <br> <br> HANDS DOWN THE WORST CUSTOMER EXPERIENCE. Quite ready to burn and throw away all my G-Star jeans.