Breaking up is hard to do

As an institution, we decided not to renew our ever-increasing contract with Bb. Instead, we are migrating the entire campus to Moodle and dedicating the funds we previously spent on licenses on development and support personnel. This was not a quick decision, nor was it done in secret. The entire campus was involved in the decision to identify a single CMS and then its selection. We put out formal bids and brought in the vendors. All in all the process to make a decision took a full year. Press releases went out in October and we received a bit of attention for our decision. We then spent the next several months working to migrate off of Bb. Our techies were in contact with their techies non-stop. Our contract ended last month and we did not renew for July 1. Only then does the sales office realize that something must be wrong with our contract. They did not receive full payment!The sales guy was dumb-founded. They never knew we were breaking up. How can they survive with such a flawed corporate structure?