Poor service from BMW JSN Motors Bryanston

My bmw 5 series had a drive train fault since 2017 whilst it was still on the maintenance plan. It went in and out of that dealership 4 times without being fixed. I presume they just erased the fault hoping it goes but it would come back few days later. The poor service we received from Carlo is uphailing and his lack of feedback made it worse. Now my car went back to the dealership last month on the 26 September 2019 to date, I am without a courtesy car and it looks like our car is not even being attended to, if it was I would have gotten some feedback at least updates.

I have always loved bmw and this is my 6th bmw but had I known the treatment and the terrible after sales experiences, I would have bought a different car make.

I am stranded without my car, no courtesy vehicle, no feedback/update.