Normal for a turnkey provider to limit discussion to 15 min?

[Nicole Cotrino]

I am looking to get into the turnkey market, and after spending a lot of time looking at different turnkey providers, I decided to call Memphis Invest with a list of questions. I read a lot of good things about the company on Bigger Pockets. 

I looked around online and created a list of questions that I would like to ask - this is a big investment for me, and I want to make sure I do my due diligence and really understand how they operate. When I called, though, the person who contacted me (via email) said that they could set up a 15-30 minute call, and that if I needed to talk more, we would need to schedule another conversation.  It seems like they can only spend 15 minutes at a time on the phone with potential investors? And, they wouldn't be able to set up that first 15 minute phone call for another week and a half. I was extremely surprised by this, as I have read so many good things about Memphis Invest and have even seen at least one of their people encouraging lots of in-depth due diligence before choosing a turnkey company. 

I'm just wondering whether I set my expectations unrealistically, or if people have found other companies to be more inclined to talk, in depth, to potential investors? Also, for people who have interacted with Memphis Invest, did communication become easier over time?

Thanks.