You are welcome to answer questions posted in the Ask a Teacher forum as long as your suggestions, help, and advice reflect a good understanding of the English language. If you are not a teacher, you will need to state that clearly at the top of your post. Please note, all posts are moderated by our in-house language experts, so make sure your suggestions, help, and advice house the kind of information an international language teacher would offer. If not, and your posts do not contribute to the topic in a positive way, they will be subject to deletion.
It's not so much that it's PC, but that you may be put through and speak to the person, who says: "Look, I can't talk at the moment. Can I ring you back."
If I will refer to Merriam-Webster, there's no clear difference between the 2.
Anywhow, quick question David: Why is it incorrect to say "may I speak to? or May I talk to/with" if it's a telephone conversation. Could u care to elaborate? Thanks!
speak with / speak to 
Linear Mode
