sorry you feel your quilt is ruined, but would like a description of what/how it was ruined. big tucks? tears? just not looking the way you pictured in your mind?
i don't send quilts out or use a LA myself, but what i "think" is happening out there is having your own LA is becoming so popular (and an expensive investment)some salesman are pitching "you can easily pay this off by quilting for others". People are doing just that, but without enough experience. Saw the same thing happen many years ago when home knitting machines became popular and again when emb. machines were all the rage. Fact is though, most will not make money with any of these. Unless you are willing to put the time in perfecting your skills, it just won't happen.
Others here have given some very good suggestions. please look into your options before giving up on the quilt