In your country?
I am from the UK and the last time I ever remember seeing carollers come to our door was when I was as really young, we talking early 90's late 80's. I haven't seen any in years. I am not even sure if they still happen, then again I have been living out of the way, so who knows.
The only place to se carollers now are usually in large supermarkets/malls
Where do you live in the world and are they a thing where you are? Have they ever been a thing where you are? Were they a thing but like me you haven't seen any in a while?