How to find out who keeps calling the cops on me and making things up that are false?

some one has been calling the cops on me and making up stuff that is not true 2 times i let them walk around search my stuff and the third time i was not home and son did not let all 6 cops and 4 cop cars in i talked to them on phone asked if he could tell me who calls so i can open a civil case and they said they couldnt tell me. so if i tell them to get a search warant will the callers name be on the warant.if not what can i do ? keep in mind i live 30 minutes from any town and cops dont like coming out here, they are getting meaner and with a pregant wife this is not fun. thanks