1. In the sample letter, fill in your personal information. A letter of credit for rent lets you address and explain the red flags that will pop up in your credit history.City of Oakland Business Tax Office 250 Frank H. Ogawa Plaza, Suite 1320. The form you need to respond to an eviction case is Answer - Unlawful Detainer-Eviction (form UD-105). Use this sample letter to dispute mistakes on your credit report.