As the owner of a digital product agency, this is really hard to read. It is such a shame that an agency would do this to you. I know you felt like they "did their best", but by setting you up with unrealistic expectations out of the gate they essentially guaranteed that everyone was going to walk away unhappy. Besides, when you go to an agency communication/transparency/team of experts is what you are paying for! You're paying for accountability! There really are good agencies out there that care about their customers and bend over backwards to deliver what they promise, but they are hard to find. For the size project you were looking at though, I do agree that a freelancer could have been a better option, but you'll run into some of the same challenges. Finding good freelancers can be just as hard as finding a good agency.