I only was mailed 1/2 the order I paid for. Now the seller is demanding I return it to get a refund. The shipping is $80 to CHINA, for me to get a $36 refund processed. PayPal is saying that's the only option for resolution. I have proof of what I paid for in detailed invoices; the seller insisted I read it wrong and only half the order detailed on the invoice was applicable. Has anyone found help with this?