How do we turn off annoyingly LOUD bells and voice, without turning off scheduled auto cleans?! Why would they program this to turn off the scheduled cleaning to make the vacuums not chime and annoy husband?! I hate those loud chime’s especially! M8 is the vac we are using and i like it cleaning at least 2-3 times per day including night time just as we are getting kids to bed so people are out of the way and not annoyed w the sound…..except the dang chimes resonate through entire house!! Turn them off - but HOW?