one_minute_pr

I offer jobs on fivrr as PR/Communication agency. How can I prevent, that people I employ for a job here on fivrr don`t circumvent or bypass me and approach my customers themselves? / Steal my customers? It is not really possible to "hide" the name of my customers since my productions (Texts, Photos, Videos, Design) are usually public and can be easily found by internet search. Thank you for your answers