Complaint Letter For Poor Customer Service by Missy Cannella Free Sample Complaint Letter For Poor Customer Service Template. DownloadRelated posts:Customer Service Cover LetterCustomer Service Sales Cover LetterRequest For Customer FeedbackCustomer Service Cashier Cover LetterCustomer Service Officer Cover LetterCustomer Service Engineer Cover LetterCustomer Service Sales Associate Cover LetterCustomer Service Offer LetterCustomer Service Clerk Cover LetterComplaint Letter About Bad Customer Service