Muddled customer service path

Sage Online Tools seemingly doesn't know how to integrate with their own Evolution platform.

After more than a year of back and forth correspondence and Team Viewer sessions they have no reverted to "you need training", but the application has not even launched. This seems to be a common problem with Sage Evolution as some of our other partners have given up on trying to integrate the data on Evolution.

I will not recommend the Sage Online Tools product due to a muddled customer service approach. They have specialised "partners" for everything which means that the customer doesn't have a single person entry point but rather has to deal with ground level developers himself. How did they think this is going to enhance customer experience?