Communication class to improve interview skills?

I applied during the 2017-2018 cycle, currently have no acceptances, and am preparing to reapply in the 2019-2020 cycle (skipping 2018-2019). My application itself has plenty of room for improvement, but I received six interview invites (5 waitlists and 1 rejection), so I'm pretty sure I need to improve my interview skills as well. I was looking up public speaking and communication classes, and I found that my local community college offers a "Communication Fundamentals" class that involves... Communication class to improve interview skills?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums