in my opinion, this person should have contacted you regarding the folds.... this is a common practice for long arm quilters when working, they cannot be expected to correct your mistakes, but... it is your hard work...
I learned a whole lot about squaring up my quilt when I went to a local shop and quilted my own quilt on a longarm... my final border had to be fixed... and they wanted to me to put a fold in the border... I actually was able to manipulate the fabric as it was quilted and it came out fine. But... it was an invaluable learning experience for me as a new quilter... lol