So, I have a question for you.

There is a study from 1967 that indicated that 93% of communication is non-verbal. Now there are some caveats to that study, but If up to 93% of Communication is non-verbal, why are you still having low quality voice calls with your customers?

This is one of the reasons that email and text have been such challenging communications mediums. Email is great for memorializing a conversation, but not a great way to have one.