Im rent a house and I have problems with my Neighbor

Hello everyone
We have a problem with a neighbor, one day my husband came out to take out the rubbish, and wanted to be friendly with and I salute him, and response received angry words, angry
told my husband that I hear a lot of noise, we know that one night my son estubo very ill, he has two years, and you know when a baby is upset he cries, it can not be avoided, but this was only once, we heard that hit the wall. My husband try to explain, but the neighbor was angry and said he would strive to get us out of the property, making threats.
Now we have received three complaints from the neighbor, when we know that is a lie, because we asked the other neighbors and dijieron who have never heard any noise from us. We live like a normal family, we never parties, do not smoke, do not have pets, and noise level are not normal but anyone can do at home.
I think we are victims of the recent From this person and because tenants are taking advantage.
Who defends us, we can do.?
His accusations are false've unfair
Thank you

my mail is: momentg@yahoo.com