Lots of good input from everyone, thank you! It has now been over a week and still no response from my TA on what was a very basic quick answer question. I'm done! Well actually, I decided I was done on Saturday. I took a look at MEI, and ended up sending a message to one of the agents I've seen suggested here. I immediately received a response from a different agent - but hey, it was July 4th and frankly I was shocked to get any response at all! Her response included pricing for what I was looking for with different room categories, and then a list of information I would need to provide if I wanted her to move forward with booking the cruise. She explained the FCC to me for the cruise that was just cancelled and what I should expect and then said she could do a courtesy hold on a cruise, etc.
I was floored! I have more information now than I did in the year and a half I was working with the previous TA, about my cruise. I booked it and am feeling very comfortable that she'll be there to help me and answer any questions or concerns I have.
Just to be clear - the issues I've been experiencing with my former TA were not related to Covid-19. This has been the situation from the beginning and I just didn't know any better - didn't realize that it shouldn't be that way. Now I do!