Cancelled policy

I cancelled my insurance with dial direct and for some reason they did not cancel scratch and dent policy wich cost R169 even after i informed them to cancell everything. FNB charges you 100 for every unpaid debit order. Dial direct decided to debit twice now my account is on a negative. I called dial direct to please stop but to no avail. I did not have to call because i never gave permision for the debit order in the first place. 0