I would keep trying. They can't fix what they don't know is broken. Being one of their guns, their customer service or their workmanship. Being a business owner, I have a large "comment" box by my front door. The sign above it reads..."If we do a great job, it would be nice to know about it. If we do a poor job, we HAVE to know about it." I think the difference between the average company and a great company is how it welcomes, and handles, it's negative comments. Give them the chance to fix their problem...if they don't, shame on them and their business will suffer.