I'm so annoyed right now!

I hate being self-employed. I never liked working with the public when I was out in the work force and I don't particularly care for it now either. The customer is always right has always been a real annoyance to me mainly because 95% of the time the customer ISN'T right. They are just upset and annoyed and rather then start a full scale fight with them, you let them think they are right so they go away happy. What irks me the most is that I don't have any idea what half of these people are upset about. I'm not the one out there working with the customers. I am totally behind the scenes in this business. I answer the phones and make out the invoices. That's it. Yet, when people call and are upset over something that our employees have or haven't done, it is ME that gets yelled at. ME that gets called every name in the book. ME who ends up groveling for their forgiveness in order not to lose a customer. Doesn't seem fair, does it?