Has anyone experienced any problems with their DSG getting stuck in 3rd gear ?

I picked up my 12.5 Polo GTI on Wednesday and by Thursday the gearbox was playing up. Gets stuck in 3rd and revs like crazy. Annoying thing about it is that it's not doing it all the time which means I have to try and film it happening whilst driving to prove something to the dealership. Plus when moving from a stand start it jerks and stutters.

Any feedback would be appreciated