I had the same symptoms on my first mk7 Gti, (July 13 Irish car). Screen would freeze and then break into Morse code, would occasionally ring random phone numbers if left in phone mode over night.
I made lots of videos after being initially fobbed off by VW Ireland, eventually after solicitor getting involved my screen and glove box control unit were replaced. I did notice that it usually occurs when temperatures were below 6 degrees at night