I waited almost 2 weeks for an appointment with a specific doctor, then when the time came, I clicked Join Call and the call just dropped. There was no way to attempt to rejoin the call, my appointment just completely disappeared. In my desperation, I used the "next doctor available" option and was paired with a lovely doctor, but she ended up just telling me I needed to go to the hospital instead, so I paid money I don't have for nothing. (Gave 2 stars because it IS convenient, but that's it.)