The charge of $.03 sq. in. is about right for custom quilting. You said they did your borders correctly and you asked for no heavy quilting for the rest-left to their interpretation. At that point she should have given you some options of designs and let you pick what you interpreted as not heavy. Her interpretation of not heavy was the DNA and circles-rather scimpy in my opinion but left to her. So it seems the thing not done correctly from the instructions given was the SID vs quarter/in for the pinwheels--serious deviation from your instructions and very different final appearance of quilt blocks. Hopefully they can correct that but it won't be easy. The lesson learned is--always be certain the LA quilter knows your wishes on all aspects and it is in writing and if possible sketches. That way if there is an intermediary, as in this case, the actual quilter has a reference. You have every right to be upset and want resolution. Based on your past experiences with the LA quilter you expected she would get it right. Keep us posted on how this works out. Occurrences such as this make both the quilter and LAer more aware of the need for clear communication. I'm sorry this happened to you and hope you will be satisfied with the outcome.