In two recent cases (one with a business partner, another with a client), in email after email, I could not impress upon the other party how important getting on the phone was to getting an issue resolved. Even though each message I sent implored them to call me, or tell me when I could call them, they ignored the request and continued to try to go back and forth on quite complicated topics. No matter how carefully I responded, this repeatedly caused misunderstandings. In the end, both conversations were resolved with a short phone call but only after hours of typing. This was a massive waste of time and more importantly, in both cases, entailed possibly damaging confusion.