Yup, I can't use a telephone at all any more due to anxiety...hell I can barely manage to be in the same room as a telephone!
I used to work in a call centre and before that I worked in IT support so I was always on the phone, but this worked fine for me because I knew exactly what to say and how to guide the phone call - it was also easy as either I was dealing with fellow nerds who were all business, or I was dealing with screaming angry customers which I find infinitely easier to deal with than happy friendly customers. With normal telephone calls there's no formal structure, and if you can't judge from body language what is really being said or when you can talk it's really tricky.
My telephone conversations go something like this;
Example #1 -'Hello'...'Hello?'...'Hello?'...'....'...*panic and hang-up*
Example #2 - 'Hello'...'Hello, is this xxxx?'...'yes'...'hello?'...'hello?'...'...'...*panic hang-up*
In these examples there is a formal structure there, but for whatever reason that conversation doesn't progress and without body language or any idea what the call is about or how it's going to go it's really hard to know what to do next, then when the conversation gets going you've no time to think about your response so you just get really panicked and anxious so trip-up over your own words.
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Bloodheart
Good-looking girls break hearts, and goodhearted girls mend them.