We used Seamless a few years ago.... excellent service until we called them about a month later.
One of our gutters isn't sloped exactly right... it's close but could use an adjustment.. I called twice over the course of a few weeks and was told they'd call me and come out in a few days.. no call no show. Then Hubby said Let me try.. again said call and come out soon.. no call no show.
Gutters look nice and clean install but customer service after the sale stinks!