Complaint Letter For Poor Customer Service by Missy Cannella Free Sample Complaint Letter For Poor Customer Service Template. DownloadRelated posts:Customer Service Officer Cover LetterSimple Customer Service Complaint LetterCustomer Service Sales Cover LetterComplaint Letter About Bad Customer ServiceCustomer Service Advisor Cover LetterRequest For Customer FeedbackCustomer Service Manager Cover LetterCustomer Service Complaint LetterCustomer Service Sales Associate Cover LetterCustomer Service Trainer Cover Letter