bluetooth issues

[Guest Stephen Hyde]

ok folks got a strange one for you, have got a car with built in bluetooth (seat leon copa se with integrated RNS 315 if it helps) and although i can pair my y300 to it fine and browse phonebook from stereo i cannot talk via it as a hands free, the stereo makes the call fine but to hear anyone i have to use phone and set speaker as source then it just becomes a speakerphone as if bluetooth isnt even their, anyone seen similar to this at all