Yes I can help with this.
Retell’s Czech support currently uses a general/multilingual ASR, which can cause transcription errors and incorrect replies. There isn’t a way to force a specific Czech-only transcriber right now. Improving accuracy usually means tweaking audio quality (clear input, noise reduction) or using a dedicated Czech ASR if Retell/Twilio add that option. I can help you optimize your setup and explore alternatives to get better Czech transcription.
@MICHAEL RAYWEN