item paid no funds ..

Fnb keeps on charging my account item paid no funds i have more than R1800 bank charges but on top of that you chqrge me item paid no funds R200 who allowed you to pay for tht item i never allowed any transaction so why are you charging me tht much for something i dont even know fnb you ***** from your owwn customers ts high time i will get read of the fnb account because you dont care about your customers... i cant pay R2000 on monthly charges thts insane