Mine works perfectly with the C-Version & the Protocol I have developed to make a Call on my iPhone i.e.Press Voice Button,say Call Fred then Dial,end a conservation,then press to end the Voice System which beeps twice & returns the Main Screen back to the Nav & the Dab Station.
Really surprised a System Reset & a re-boot of Version C or later did not resolve the above issues or,of course,a System Replacement in the extreme.
Tel