正しい靴を早速送ってくれたようです。間違っている靴は返送用（送料先方負担）でラベルを貼って送り返してくれと言われました。
I am sending out the correct shoe out today, you should receive it tomorrow. Please put the incorrect shoe in the box and ship it back to us in the return label included.
Please let me know if you would like UPS to pick it up instead.