Just chat with google support.
For refusing delivery, should get full refund and won't be charged shipping
cost
message from google support. :
....
Thank you for your patience.
I understand you would like to know will you be charged shipping if you
refuse delivery. I do see this as a concern and will be more than happy to
assist you.
You are refusing the delivery so the total amount spent will be refunded to
you
.....
