Accurate Dorwin

I ordered windows and doors from accurate Dorwin after being assured by the sales rep that customer service is a priority for this company. Unfortunately, we've had several issues, some which the manager I've been in contact with acknowledges are the responsibility of accurate Dorwin. However, they are refusing to address any if the issues unless I sign a document saying that I accept they won't repair the items I was originally told they would. It's been a very frustrating experience. I want to love this product, but my experience with getting the items repaired has been less than satisfactory.