My complaint is that it is definitely occurring. The Porsche dealer has been very accommodating and helpful but due to the workload in their building doesn't have the time to adequately test and replicate the problem. Won't recognize that the problem exists unless they see it with their own eyes. I know it occurs because its my car and I drive it and get cut off with my phone calls/music/nav etc. I contend that they know about this, they just want to see it before action takes place. Now the manufacturer is making it my pain in the ass until proven.