Disgusted by reoccuring unauthorised debit orders

How does a financial institution allow so many unauthorised debit orders of several R89 R99 R97 on one account for almost every month i have to reverse one or two of these ilegal debit orders that i never authorised which leads to costing me money! Why arent there measures to prevent these from reoccuring so often like its a normal thing! Every month i know i have to check my statement to reverse 1 or 2 of these like i just reversed 2 now and i feel the bank must be able to identify these and put measures in place to prevent this as i am on my way out of capitec