Allow me to start off by saying how dare you even consider disrespecting a fellow human being who is only trying to assist you with any problems you are experiencing. You should never, under any circumstance, speak to a person as if they are your dog that just pissed all over the brand new carpet you bought yesterday. No one told you to go out to eat or to go buy that cell phone, or to do anything that requires you to interact with another person in a situation in which they are servicing you. It's called service for a reason, and if you would so kindly entertain me for just a moment I will bless you with the definition of service.
Service (n): The action of helping or doing work for someone.
I pray that my Sweet Briar English degree taught me a little something, because as I read this definition no where do I see the phrase "The action of allowing a person to degrade you as if you are the toe fungus they never scrape from their foul smelling feet." As an individual that has worked in customer service since the day she turned 16, I have dealt with the worst of the worst and I am always confounded at the end of the day when I consider how a person could truly believe in the horrid things they say to people when one feels they are experiencing a disservice.
First and foremost, the person you are behaving ignorantly towards is more than likely not the root of your problem. Those that work customer service, unfortunately, are playing the middle man. That steak that you ordered medium that trotted out of the kitchen still mooing? It wasn't made by your server, your server just made certain that it didn't bump into anyone as it trotted jovially to your table since you weren't in the mood to make your own medium temp steak. Yet here you are, yelling at your server and trying to degrade them like the yapping Chihuahua that you are. Your cell phone reception is spotty in the privacy of your own home, but you genuinely believe that shouting gibberish at the cellular sales team, while your face turns six shades of purple from lack of oxygen, helps the situation? I'm concerned for your mental stability if you absolutely believe that the sales team has control over where your cell phone reception works and does not.
Trust me when I say that after you leave, the customer service team is going to rip your character apart-- and rightfully so. All you've done is transform yourself into a belligerent baby that won't accept a bottle or rocking motions as viable options to shut you up. Pull yourself together and remember your roots; I at least hope your roots didn't embed mistreatment of others into your DNA.
Other than the fact that those in customer service are also human beings, you should be more considerate toward them because you don't know what sort of baggage they trudged into the workplace with that day. You carry around your very own specially stitched problems on your embroidered socks, now tell me why you've forgotten that others deal with daily struggles all the same? That's the one thing that bonds us as a whole: we all experience pain. Our situations may be diverse, and we may look different, but my heart bleeds the same way yours does. I promise you with every fiber of my being no one walks into work on any given day and says "I can't wait for the first person to yell at me today and make me feel more incompetent than a watch harboring dead batteries."
So, please show more appreciation of those working in customer service. They're only trying to help you.