got banned for no rule + my report got invalid

Make a ban appeal for the ban, it was not issued by Dani either.
For the invalid complaint matter, not every complaint can be handled with 100% accuracy, that's why you get a prompt saying "If you are not satisfied with this outcome please post on forums under 'Player complaints'.
If players posted staff complaints after every complaint they've submitted is marked invalid, the staff complaints page would be filled.

Hi the fire after a discussion between myself, managers and Mike we have decided since you are such a troublesome player we would rather ban you than tolerate your shit ass behaviour on the server. We wish you all the best with your future life, but unfortunately its going to be on a Russian server not Mike's Cops and Robbers.

Complaint denied.