[Q] Built-in text messages: call rejection & more topic

1. I'm looking for a way to edit built in text messages available when rejecting a call. I was managed to add new messages with WearResponses but they only shows up when creating new text message, not available in call rejection screen.

2. As stated above I added custom text messages with WearResponses, however I cannot get rid off the built in messages, even setting the option "Notification settings" -> "Stock responses inclusion" to off. Does it work for anybody?