Sorry to hear what happened, I know it can be stressful.
If your boss is nice enough, you should give him the number and address to that kh and have him contact them and tell them that if they come back, he will call the police and have them removed for trespassing.
They can get pretty aggressive. When my hubby and I left, we were not sure if we wanted to send in a letter and DA or just fade at first. But the elders kept coming back and calling like every other day. I told them I was depressed and needed time to think things out and to please not come back. I kept all the lights off in the front of my home hoping they would not walk down the long, dark driveway (it was winter), but NO, even after all this, they came up to the door and kept knocking UNTIL I opened it. I lashed out and told them I felt they were intruding on my privacy and not to come back again. My hubby felt bad though and told them it was nothing personal but I was meaner. I told them I may commit suicide if they came back again because they were stressing me out. Of course, I was just pulling their chain but they stopped coming and that gave me time to write my DA letter. In it I told them to absolutely under no circumstances to come near my home or I would press harrasment charges.