I know exactly how you feel! I always ask DH to do the phonecalls cause I too feel like a kid trying to be a grown up!

When you work out how to overcome let me know!
Funnily enough, I did try to palm off one call to DP today about enquiring when my next OB appointment was because I'd lost the date/time somewhere but they told him they needed to speak to me directly and I felt a million times stupider having to get on there after obviously trying to avoid doing so haha but I survived... just need to keep focussing on every 'successful' call... I can do it, I can do itttttt...

You are not alone! I hate making phone calls too. And I don't even think I'm bad at it so I don't know wtf the problem is. I feel so nervous/anxious when I have to call but the conversation goes fine so I don't know what it is. It's the same, only appointments etc, not with family and friends.

I always get DH to do it too and I think he thinks I'm being stupid, lol.
I don't know where mine comes from either Heaven as I haven't had any bad phone experiences and things always go fine so definitely an irrational anxiety!