How to reverse domain transfer from go daddy to shopify. I want to point the domain to Shopify. TY.

[TheStyle]

I thought I was going import my domain from GD to shopify, but instead decided to have the web site domain "point" to 

shopify & keep the domain & email with GD. When I went to GD to look for the desired "code", I learned it was easier
to stay with GD. Shopify has already charged me $14.00 for a yearly subscription. It won't let me link the domain to
shopify. What to do?  MB