I'm currently making regular trips to Watford Junction, and because my 60+ Oyster card is not valid on LNWR beyond zone 6 I change between Overground and LNWR at H&W each way. I've noticed an issue with the announcements on platform 6. When a London train is approaching the platform it is announced as the XX:XX LNWR service to Euston calling at all stations to Euston. Once the train stops another announcement correctly states that it's non-stop to Euston. Does anyone know why this is? Who to contact to get it corrected?