I had ordered 2 sets of roller shades 7 weeks apart, and SelectBlinds changed the cartridge design in between without letting me know when I ordered the second set (boo SelectBlinds). My first attempt at reaching out to customer service was a bust, but Rossey, a Chat Agent, successfully researched my problem, owned up to the error (astounding in this day and age), and worked to fix it, letting me know every step of the way what was going on. I am now a very happy SelectBlinds customer! Thank you.