
Tip 2) Keep Calm and Carry on. This kinda ties into number one, but try to stay calm. If you feel the urge to yell or use explicit language which would not be appropriate for a small child, take a deep breath and carry on, without being too crazy. If it gets to the point where you are not able to be calm, ask the customer service rep if you are able to quickly grab a pen or something else which would be reasonable in the situation, put the phone on mute, and yell for a few minutes. Once you have it all out of your system, you may continue.
Tip 3) Take notes. In situations which are incredibly frustrating, it is pretty easy to forget what has been said. By taking notes, you can remember exactly what was said, and/or agreed upon, which will help you in the long run. If you need to do anything, and the customer service rep gives you info about how to do it, you are going to find it much easier to remember if you have it all written down.
Tip 4) You need some alone time. If your call is important, I recommend that you try to be away from people. Perhaps go into another room and make the call. If there are people around, sometimes it is not very easy to concentrate.
Tip 5) Don't forget that you can scream and yell all you want when you are off the phone. Hold in your rage until you are off the phone. If you want to punch a kitten while you are on the phone, refrain from doing so during the call... and after the call. I'd say that a punching bag or pillow is an excellent substitute for a kitten, which are way too adorable to punch. *Don't punch kittens!!!*
Hopefully these tips will help you out. Try not to take things personally and remember, customer service reps are people too - don't be mean.