Highlight any four circumstances under which a businessman would communicate to the customers by letters rather than telephone.

Circumstances when a businessman would communicate to customers with letters than telephone.

• When permanent records for future reference are required
• When communication needs to be highly confidential
• When communication need to reach many people at a time when he/ she needs to accommodate complex messages such as tables and graphs for illustrations.
• When the customer is far away and it may be two expensive to call.