I was charged 10x the price quoted by bolt!

On the 20th of March I requested a ride from bolt of which I was qouted R9.00, however bolt debited R100.00 from my account. This is a second time I have an issue with bolt , what frustrates me is their app does'nt allow for such a complaint to be lodged which makes this very unfair to customers which makes it theft!! I will be going back to using uber.