Thank you for asking this question I'll try to put it in simple terms, so you can visualize the appropriate points.

Right the historic term for Zersetzung comes from Vienna in the later 1920s, and most famously by the German public under the Nazi propaganda campaign under the quasi-medical ideology of Eugenics. ( just a titbit of information on modern Psychiatric practices like medications came from this era in time)please if you are at all interested please follow this link, THE BREGGIN'S FIRST AND SECOND VIOLENCE INITIATIVES | Psychiatric Drug Facts

It has also been used in recent history as an instrument of control and surveillance as in the cold war communistic countries like Poland and East Germany. The secret Police and Informer based communities who used intimations tactics, psychological warfare to undermind the targets ( victims of state investigations) minds and competence. this is also a form of Gaslighting which could be attributed as a form of zersetzung also.
Please follow the link

Anyway, the main focus I wanted to convey is the Psycho-Social aspects of what's attributed to Zersetzung.

So this would be things like experiencing workplace mobbing, public warming via Snapchat baiting you for a response or looking to film you in compromising situations. (of which are sometimes engineered).

This to receiving a strange attitude in life by your local environment. I have put a link that explains it. Zersetzung - Wikipedia

Even ostracising someone covertly ( sending someone to Coventry or prolong covert and subtle harassment or humiliation ) Zersetzung.org Home - Zersetzung.org

At the end of the day, my main point is that your 'voices' are indeed a very insidious form of Zesetzung.

The UN has recently termed the phrase Cyber Torture to explain accounts around the world of people reporting to have suffered from these things.

You may have heard the term gang Stalking or Electronic Harassment, Cause Stalking, or Happy slapping, Molka. Think within these terms.

UN warns of rise of 'cybertorture' to bypass physical ban | Law | The Guardian

Please read and follow legitimate resources. the best of luck.