I once worked in a tech company that employed a large overseas staff. The requests I would get involved large lists of IP addresses, port numbers, and host names. The host names were never anything you could even pronounce. They looked like random alpha-numerics due to names being dictated by a formula. For some reason, my peers from India always insisted on making a phone call, instead of just putting the request into an email from which I could copy/paste the names/IPs/ports into the queries and commands I needed to execute the request.
It got so bad that I just stopped answering my phone, and let every call go to vmail. Then I would check the vmail periodically, and email the senders, telling them to put the request into an email. Sometimes they would email back that they really needed to *talk* on the phone. So I would call them back and they would attempt to rattle off the initial vmail over again. And I would interrupt them to explain that I do not take dictation; If they want the request done, they need to put it in an email.