How not to do customer service.
https://www.theguardian.com/uk-news/2017/jan/04/yorkshires-bookseller-from-hell-regrets-calling-customer-a-pain-in-the-arse
How not to do customer service.
https://www.theguardian.com/uk-news/2017/jan/04/yorkshires-bookseller-from-hell-regrets-calling-customer-a-pain-in-the-arse