Keenwalking undersized poor quality shoes that can not be reasonably returned

My wife ordered and recieved a pair of shoes that were her nornal size.  When they arrived they were way too small (see picture) and verry poor quality.  We for a return authorization.  We were offered an exchange for someting else on the web site but given our experience we declined and asked for a refund.  This is their response: 

"If you want to get your full refund, please send the item back to the following address:

Receiver: Liangchao Xie

Address: Room 201, Unit 3, Building 66, Taojieling Community, Futian Subdistrict

City: Yiwu, Jinhua

State: Zhejiang

Country: China 

Zipcode :322000 

Phone: 0086-13575957097

Please pay the shipping fee for sending them back and make sure that it is still new, unused. We will only issue the full refund once received at our warehouse. Besides that, you should inform the shipping company that the item's price is lower than $5 to avoid an extra fee. 

However, we can offer you a better solution for this issue. We will refund 10% of the product value and you can keep it, no need to return them to China since the shipping cost should be expensive. Also, due to the current health situation, the return will be quite risky. We can refund shortly, no need to wait for the delivery as well.

*NOTE: The address in the USA is a delivery company warehouse, they do not handle exchange or return. We only can work on your issue if you send the item to the address that we provided."

This amounts to saying no returns and the 10% offer is insulting.