Wish complaint: Merchant unwilling to refund for wrong item

Ordered item with RGB lights but item had a fixed orange light. Merchant acknowledged that but is trying to negotiate partial refund and wants me to send it back to China.
According to Wish policy if item does not meet specifications one does not have to pay for returning item and does not ahve to send it internationally.
Opened ticket in Wish but only merchant responds. Wrote to [email protected] but they ask to open ticket even though I had informed them I had doenexactly that and only merchant responds who is not willing to refund full cost unless I return item at own cost which si more than what I paid for item. I replied to their email but they just send my email back without writing anything. It appears to be simply bounced back. There seems to be no way to gte out of this loop forcing you deal with Seller and wish support does not intervene in messages when you specifically write to wish support agent since only merchant responds.