Harrassment call from PETA

A lady from PETA called me and asked me why you murdered three kittens and I got a complaint against you and she continuously harrasses me daily by calling me for more than 15 days. But the reality is I have three kittens but my sweeper took all of them to her home but I have a signed letter by the sweeper that she has all three kittens with her. So is there any section through which I can file a FIR against that lady who is from PETA.