Life cover not approved by customer but given by force. Please dispute the funds then cancel this life cover

I'm sadly disappointed in Fnb, I thought we are safe so as our money. I once asked for the consultant to assist me with regards to getting a Quotation for life cover which I was not satisfied with the rates so I asked him not to activate that life cover because I don't want it, it's costly but that consultant clearly only cared about making commission for herself and went ahead in activating the policy. So now I'm stucked with disputing that money which is above a thousand rand. How can one be so *********** and unconsiderative as this costs me bank charges and lot of work to always call for disputes. Today I call fnb premier department where I didn't get help so they transferred me to fnb life, where I was also kept on hold until my Airtime exhausted and I had to buy more just to get this dispute sorted out but unfortunately I didn't get assistance. The list they did o. The online chat was to tell me step to dispute which never worked because the covid 19 options tells us about loans not the dispute . Can someone do his or her job buy canceling this life cover policy for good and dispute that debit order. If they cant assist me then it will leave me no option but to change the bank because our best interest at heart is not considered