Rightly or wrongly, I always say in my, (now rare) pre match to CARS, if anyone has a word with you let me know and I'll have a word with them.
This allows leeway on how to sanction - depending on what I ACTUALLY hear/see.
Back in South Yorkshire we didn't have CARs and it's just so much better. Now I'm a southern softy I'm using them for the first time and it would be great if I had the option to not use them and just do it all myself but alas I don't.