Unfair charges that goes with unauthorized debits

I am very unhappy with my bank Capitec Bank because for a period of about three to four consecutive months there is an unauthorized debits going off my account. Even today i fail to understand why should i be penalized and be charged R30 every time i dispute an unauthorized debit going off my account. It is like Capitec Bank is allowing these unauthorized debits so they can gain from the dispute charges, why disputing with FNB is free of charge! why should i pay for reversing money ****** from my account, this is so unfair......