If the subject is complicated, ask for a call-back. And always give the best time to get back to you. Don't pick up the phone every time you have a question for your client. Other ways to communicate In many cases, a fax or e-mail can be used to get information to your client. Ask your client if the fax or e-mail is okay to use.
Some clients still like to get their information in person.
Using a fax to communicate bad news doesn't make it any better - and makes you look cowardly. Pick up the phone instead. Keep most faxes to under 10 pages. Send anything longer by overnight mail or messenger. Keep yourself informed about your client's business.