Need some advice on what to do

I wanted to see if anyone has some advice on what to do on a situation I am having with my ex-husband's girlfriend. This past Monday morning my apartment complex called me and told me that they received a fax the evening before that I wanted to be treated for bedbugs! I told them that I didn't send a fax and didn't have bedbugs, and asked her what number the fax came from. She wouldn't tell me. She then asked me why I didn't leave my phone number on the fax only my address, and I asked her didn't she think that was weird? She said yes. I told her that my ex-husband's girlfriend's house had bedbugs and she sent the fax.

So, she sent the fax to get my apartment's maintenence people over here for bedbugs that I don't have. I told her that the woman that I wanted a copy of the fax, and she told I couldn't have one for privacy reasons. Then later that day, she called me to tell me that "someone" called the office whispering that they wanted their home at and read off my address to be sprayed because they had bedbugs climbing all over the windows! when the lady asked who it was, she hung up! HMMMM wonder who that was?????!!!!

I went to the police to see if I could file harrassment charges, and can not without the fax. Any suggestions on how to get some peace? I have had many, many other situations with her and my ex similar to this. I don't know what to do. Do I take him to court? or what? I was hoping someone reading this might have had, unfortunately a similar situation. Tressa.