Starline Windows is one of the worst companies I have ever used for service, quality, and customer support.
I had a sliding door replaced and it was badly scratched. They informed me they would replace the entire sliding panel of the door and I was appeased, but when they arrived they only replaced the glass portion and did a horrible job. (chips, scratches, misalignment) I complained and they told me that a junior technician did "shoddy workmanship" and their senior tech would come with a new piece of glass and all would be well.
The senior tech arrived and did an excellent job of installing the glass and left. Unfortunately, he damaged the re-used glass when he reinstalled it and didn't even tell me. I had to complain yet again.
I pleaded with this company for a new door, and not a repair, but they once again repaired the door for a third time. The senior tech did it and he would not even say hello to me, or acknowledge me at all. The repair job was OK, but it still looks like a repaired door with various damage(scratches, nicks), misalignment, etc. There was glue left all over the door as well which I spent hours cleaning.
I had to hound them several times as they kept on not getting back to me. The whole process took 3 months and I was still not satisfied. Customer service did not do a good job in resolving this issue. They told me that they would not refund me out of spite as I was getting upset with them that they could not handle this properly once and for all.
In the end, I took a cash payout for my issues, but I would have much rather had the job done properly without all of the hassle