If you are using Live weather in MSFS, may I suggest this program that I wrote just for this: [Release: v1.035] Flight Information (Flight Plan, Live Weather, and much more)
It gives you everything you could ask for in regards to ATIS requests by ICAO, and much more. A real pilot (TheCorporatePilotDad) QA’d this program while I wrote it.
This could help you when ATC tries to talk over itself. 