Zynga — Zygna has delete my zoo

Hi, I have been playing at zygna, farmville country experes for a long time. There is also a zoo and that is what my complaint is about. I did my best to get this far with the zoo, I had 37 animals in the zoo, and was still one , then zygna went to update and my whole zoo was gone. Have emailed zygna so many times and they keep but promise and do nothing. I spent a lot of money to get to this point and now I am lost everything because they had to update if necessary. It’s not my fault but zygna, I have a zoo now but no animals, I want it back the way it was. Kind regards Eliane Muzo. I want my zoo back.