Call waiting.

I'm sorry to those who have it but I just can't explain how much I hate call waiting. Everytime, and I mean everytime I'm talking to my SIL she will always at some point say "can you hold a minute? There's someone on the other line." Usually I just hang up.

I refuse to have call waiting. When I'm talking to you on the phone, I concentrate on you, and only you. If anyone else calls me and gets a busy signal, tough, call back later and I promise I will concentrate on you then.

Something else I can do without is when you are talking to someone on the phone and they are not talking to you....they are talking to the dog or yelling at the kids or responding to something hubby said..... I wish there was a manual on phone etiquette.