Was sold the incorrect plug, head office ignoring me for three weeks and three emails.

The lady at the store guaranteed me that the converter plugs were the correct ones, instead of saying she doesn’t know. I get to Croatia half way across the world and the plugs are incorrect. I did not check the plugs as she confirmed ONE HUNDRED PERCENT that they were correct. I even asked her to please check that it’s correct. I contact head office telling them that it is the incorrect plugs, they tell me to return it to cape union mart. I am overseas for 6 months so I cannot return them, obviously. It was such a mission to find the correct plugs over here. I have emailed them telling me to refund me as I will not be able to return them for the next 6 months. Head office have ignored me for three weeks now, three emails also just ignored. Completely disgusting! Will never shop at Cape Union Mart ever again! And I will be telling everyone about this awful experience! I have never in my life been ignored by head office. This is how companies lose life customers.