Sorted out the rattle noise I had, it turned out to be the rear door cards at the top by the B pillar. Not sure if it is just my car but they seem to be badly designed because I can, on both sides push the door card in and they move serveral mm
If I push both in they stay quite until the rear doors are shut again. I'm going to put a little bit of packing in the gaps to see if that helps. The front seat rattle is a little harder to get to the bottom of.
I'm going to have to get the car booked in for the problem with the phone calls as it is getting to the point now where I can't trust it. Has anyone else had the problem with phone calls? It would really help if I had some info before going to the dealers.