I hate to say this but the only time I ever hear from them is when they want whats in my wallet. To find out what's going on in the riding is like pulling teeth.
Fundraising is one element of national and consituency politics. Contributions are an important but somewhat benign part of politics.
Apparently, there is information that is provided to all consituents through MP newsletters, regardless of the party that is representing the riding. I have heard that such letters might also include contact information is there are questions or concerns.
I suppose other venues of information exchange include reports on local politics in local newspapers, letters to the editor, letters of exchange, email communications or phone calls with MP's constituency offices.
Apparently, the same methods apply with the various political EDAs.