Cows in my yard... again?

So this is the 3rd time this week (it's only Wednesday, for cryin out loud) and I've walked my neighbor's darn cows back to his field twice. Now they're in my neighbor's yard, in mine, and they won't go away now. Neighbor's aren't home. Farmer man doesn't have a telephone and he's too creepy to go to his house alone as a female. His cows have been roaming all over for at least 2 weeks. Is there anyone I can call to come out here and get these cows taken away? It's 4 calves (old enough to call cows, but still very young) I've tried chasing them, (getting a funny mental image?) scaring them, walking them with a lead, so on. It's making me so mad, they're tramping the gardens, ripping up the yard because it rained yesterday, and driving the dogs insane. I'd shoot them if I could then move them afterwards... so not an option to have 4 dead cows in my yard. Any ideas of who to call? Thanks in advance.