SSDI application: phone calls

I read on https://howtogeton.wordpress.com/2017/03/09/how-to-avoid-scary-phone-calls/ that it is probably better if I avoid phone conversations with SSA.

A person from Disability Determination Services asked my husband to speak with me to "confirm information in my medical history", but I am wary that I will be asked many more questions that I am probably not equipped to answer on the fly. Should I stick to requesting all communications in writing?

For one thing, the last time I...

SSDI application: phone calls