This would depend on your riding and what you're writing about.
I've received replies from my MPP, MP, and a handful of cabinet ministers over the years writing about a few at-the-time hot topics. Doug Ford, for all his faults, is apparently quite responsive if you just text him (that's secondhand knowledge from a friend, I can't tell you if it's actually him on the other side of the line, but it's a thing that exists. Make of that what you will. )
I regularly receive responses from my reps here in Massachusetts. They also hold town hall meetings where you can ask questions and listen first-hand. I attended one last night and spoke 1:1 with my Congresswoman for a moment afterwards.
I'm sure there are districts where this is not the case in the US - but I hope everyone with concerns reaches out to their elected officials and takes an hour once or twice a year to listen to them in person when they are present in their districts.
If your rep doesn't answer you, tell your neighbors and vote for one who will.
I've received replies from my MPP, MP, and a handful of cabinet ministers over the years writing about a few at-the-time hot topics. Doug Ford, for all his faults, is apparently quite responsive if you just text him (that's secondhand knowledge from a friend, I can't tell you if it's actually him on the other side of the line, but it's a thing that exists. Make of that what you will. )