Do you have proof that these players were hacking?
If you do report them here:
https://pika-network.net/forums/report_submission/
Select Hacking/Blacklisted Mods/Macros as the offense and then fill the form. If you need help with it PM me.
I also see that you would like to become staff. In order to become staff you must first apply here:
https://pika-network.net/forums/staff_app_submission/
Choose where you want to be staff (ie. a PvP server, a non-PvP server, which server, etc.) and then fill out the rest of the form. Again, you can PM me if you need help with it.
Pika won't just accept you as staff if you beg. Pika's wants to have reliable staff which is why they accept the good applicants that have to them proved themselves worthy somehow.
Also you won't just ban immediately. First you will be put as a Trial-Helper and you will learn the importance of being staff as well as how to catch and deal with rulebreakers. Then if you pass your Trial you will become a Helper and you will assist Mods in dealing with problems on the server.
Pika's staff
don't just ban hackers, they also help out and assist players, as well as deal with other broken rules.
