When I worked in a call centre as a technical advisor for sky broadband all I had was people complaining day in and day out, and I'd usually hear at least one complaint that was either totally childish or just didn't make any sense.
I'll tell about the time I lost my cool so much I insulted the customer. As I recall he was having some speed issues, I had a look at his profile and could see he wasn't getting the speed he should be, I was able to adjust some **** and fix the problem. So I'm all like "that should be a lot faster for you now, sir", and sure enough he was able to load web pages in no time at all. So he asks me after this ...
Customer: So, I've got the yellow cable from the modem plugged into the computer.
Me: Yeah?
Customer: I thought it was wireless?
Me: Yeah, you can go wireless. I can talk you through that if you want. We know your connection works, so lets disconnect the yellow cable and see if we can find the wireless connection.
Customer: But if it's wireless why send me a yellow cable?
Me: In case you don't want wireless or don't have the ability to go wireless with your computer.
Customer: (angrily) But I ordered a wireless router!!!!!
Me: Yes, and that's what you have.
Customer: But its plugged in now!!!!
Me: (what??) Well lets see if we can get it working wirelessly.
Customer: (still angry) So what should I do with the yellow cable??!!???
Me: You can just put that away, sir.
Customer: I DIDN'T WANT IT IN THE FIRST PLACE!! I WANTED WIRELESS!!!
At this point I just have absolutely no idea what the guy is angry about. If you can picture this conversation going on for another 15 minutes, with the guy asking the exact same questions over and over, and actually shouting down the phone at me sometimes, and me explaining the exact same thing over and over, you get a picture of my frustration. It eventually gets to the point where it's like...
Customer: (sarcastic and shouting down the phone) WHY! DID! YOU! SEND ME! THE YELLOW CABLEEEEEEEEE!!!
ME: You don't have to use it!!! You don't have to use the yellow cable!!!!
Customer: Then why send me it!!!!
Me: (****!!) To give you the choice!! You don't have to use it, its there to give you the choice!!
Customer: I specifically ordered a wireless box!!!!
Me: THAT'S WHAT YOU HAVE!!!!
And on and on and on and on. Until, for about the fifth or sixth or seventh time he asks me again, shouting...
Customer: WHY SEND ME THE YELLOW CABLE!!!!
Me: Go **** yourself you ****ing idiot.
Then I hungup the call.
I was so mad, I had to take a break to relax myself, I went to get some water. I wanted to smack and break something.
About an hour later, I checked his records to see if he called in again, and sure enough he had. The notes left by the next guy said that he wanted to complain about a member of staff, so the guy put him through to customer services. However, I never ever heard anything about it, so I assume he either didn't get anywhere with customer servies or customer services just didn't have any way of finding who I was.