Opinion: A little customer service, please

We have all faced issues with customer service during the pandemic. Many businesses, especially restaurants and the hospitality industry, have been hit hard with worker shortages. Some restaurants have reduced hours, some have placed signs at the entrance to be patient as they are short-staffed, and some businesses have failed altogether. I fully understand excessive waiting times and erratic business hours due to being short-staffed. But the lack of basic customer service is not acceptable. Recently, my wife and I had experiences of both exceptional and horrendous customer service. Our first negative experience is an ongoing challenge that began last summer when we replaced the sliding glass door in our basement.