UN AUTHORISED DEBIT ORDERS

why do one have a full banking app if you cannot use all the functions, now you want me to go and stand in a mile que at a branch to be assisted where to use the app, I NEED TO REVERSE UN AUTHORISED DEBIT ORDERS FROM MY ACCOUNT BEFORE IT WAS AVAILABLE TO DISPUTE AND REVERSE DEBIT ORDERS, LAST MONTH I BATTLED TO STOP THE DEBIT ORDERS AND STILL THEY DEDUCTING DEBIT ORDERS,