How To Write A Complaint Letter About Poor Service . Poor service in a hotel or restaurant. Having consistently enjoyed your services for 8 years now, i regret to point out that your company let me down of late. Sample letters for complain about an employee who has given poor or from www.pinterest.com Complaint letter for poor services / unsatisfactory services highlighting the promised service standards, performance issues, resulting in damages and demanding the service provider to rectify the situation within a certain period time. Write the letter in a precise way. Keep a copy for yourself.