Shipping Issue

I have 1 shipping (Standard Shipping) method. Charges are based on Cost dependencies.

More than $0 is $7.99

More than $31 is $10.99

More than $121 is 14.99

I had a customer with a cart of $99 and tax $10.44

Total $109.44

The cart charged $21.98 for shipping. It should have been $10.99

Any thoughts?

Double check your rates in your method and verify that you do not have a shipping fee set for that product.

Shipping has not been set for any product. I have double checked the rates and they are as I have listed in my original post. The cart had multip[le items.