So sorry, I know exactly how you feel. Just makes a person sick to their stomach when you put out that kind of money and get back your quilt and the quilting is lacking. I will attached a letter I wrote to my mother a few years back when the quilt I gave her had been quilted 3 times, yes 3 times.
No one should have to go through a bad quilting job but there are a few out there that make long arm quilters look not so good.
Live and learn who you can trust in the quilting world. My heart goes out to you.