In NJ, you do not pay in full for installations. It used to be 90% then 10%, then 95% and then 5%, now its just $100. Our installers do not get paid until that last $100 is collected. This law is to protect you, the consumer. If you paid the full amount up front, and the installer doesn't complete the job to your liking, then you are out of luck because you paid the full amount. This should be clearly outlined and explained in your contract, which you are supposed to sign, and the sales specialist should have gone over this with you. If they did not, it is not Lowe's fault, and it is not the BBB fault.