Help! My Emotional Support Cat is Missing

So supposedly some lady found her and left a description of her and then by the time I got to the post which she only had up for 2 days she took the post off line and and I have her phone number but she won't answer to none of my replies she said I got to show an enormous amount of proof that's the cat is mine I did all that and she still hasn't answered none of my replies it's like she's ignoring me for no reason and then she said she gave the cat to another family which is bullshit because it's my service animal it's my emotional support pet I was in jail and I had my girlfriend watch her and she lost a cat somewhere over by social security office and has not been able to recover her from what I've been told some lady found her and gave her to anther family I have her phone number it is 541-801-9553 she will not answer the phone I also looked it up online it says when you find somebody's cat you're supposed to give it 30 days before you do anything with it you're not supposed to just give it away in two days