Jonathan, I am currently experiencing a very similar issue. A few weeks back, I started an email communication with an adviser at Memphis Invest, and scheduled a introduction discussion as you had. When the day of the meeting arrived, I sat ready with my questions at hand, waiting for the phone to ring. Time passed, but the phone never rang. The scheduled meeting time came and went, with no call from the Memphis Invest adviser. I followed up with an email, giving him the benefit of the doubt, that perhaps there was a scheduling mistake.
However, about a week and a half later, I have still not heard any response from that adviser. I had been researching Memphis Invest for quite some time, and was very interested in getting started working with them. Given everything I had read and seen discussed, this is absolutely not how I expected the customer service from Memphis Invest to play out. Perhaps we were both talking with the same adviser, feel free to private message me to share the name. I still hold out faith that this is an exception case, and that we both can somehow restart communications with Memphis Invest and get things moving forward.
Let's reach out into the aether and hope that @Chris Clothier is able to shine some light.