Whats the best way to report an unshoveled sidewalk?

On the way I walk home, there is a LDS church that NEVER shovels their sidewalks. It's ridiculous. At first, I blamed it on the fact that it's a church and the people who go there are only there on Sunday, but they have a relatively large private parking lot that is shoveled with trucks every time it snows. I can't seem to understand why they can't get somebody to do the sidewalk in front of the building, too. I am okay with walking through a foot of snow, but when the temp really flip flops and we're left with a layer of ice, I am forced to walk on the road to avoid slipping with all the bags I carry. They have crowds of high school kids that can go around and knock on people's doors, but they can't shovel while they're at it?

This has been really getting on my nerves lately. I couldn't find an email address (or even a name) of a representative of the church, but I found a phone number. Should I call them and tell them about the problem? PS. The church is in Philadelphia. Thanks.