Be concise. Customer service representatives may receive as many as hundreds of letters a day, so it's vital that you get to the point quickly, so they know exactly what they're dealing with as soon as they begin reading. If your letter is too long or detailed, the reader will be inclined to skim its contents and end up with an unclear idea of the exact problem or your desired resolution.[1]
• Avoid superfluous detail or going off on long rants or tangents.
• Try to keep your letter on a single page, or under about 200 words