Incorrect item in online order

I ordered 2 Jeans in a size 34 online. I received the order and opened it, the first jeans were in a size 34 and exactly what I ordered but the second jeans were something totally different from what I ordered and they were in a size 30 and the jeans do not have a price tag. So how am I supposed to return jeans which do not have a price tag?. I want what I ordered please, I don't want a refund.