The link to the email support doesn’t work. I was charged twice for a tutor lesson that never happened.
You can email us at support (at) lingq.com 
Sorry to hear you’ve had trouble with this! I checked and am not quite sure which conversations exactly you’re referring to. If you would include a link to the conversation (click the conversation from the Speak page then grab the URL) and send it to Support we’ll be more than happy to help with this!