No response 😕 despite numerous communications regarding my account *****ulent activities

I reported *****ulent activities from my account to the online department. They gave me a reference number and asked to provide documents which I did. Weeks went by without response, then I called them. The agent told me that they are processing and that they will respond to my emails. Few weeks passed no communication. Wrote back they completely ignore my emails. Its been 3 months now no help, no answers