FNB CAN'T ASSIST WITH STOP ORDER

I bought a car via Westbank. On the internet banking there was links to get a policy that will pay the outstanding amount of the car in case I die. I clicked on link they called me and we did the deal over the phone. They were going to post me the documents and emailed it but I never received it. Which wasn't a problem but I don't have the policy number. Anyway every month they deduct the money. So Dec 2021 we settled the loan with Westbank and no longer need the policy. So I tried to call them but no luck. Then emailed and just get a computer generated email. Anyway Jan 2022 came and boom another debit. So I tried to dispute it on Fnb but once again no luck. TRIED to do a stop order on my app. Boom March another debit. I tried their Facebook page but everyone is complaining about the same. No one is coming back to you and there is no way to stop it. I went to FNB in Lambton to do a stop order and was told I can't do it anymore. I have to come. In every month and do a reverse payment... I mean really? Then was told the only way I can stop it is to close the account and open a another account. I don't understand this as this is my account. I was told to cancel it at HOLLARD and I did but I'm still stuck with this debit. So I don't know if Fnb doesn't want to assist me with this because Westbank is apart of them and HOLLARD is being promoted as a service provider by them. I really think it's lame when I printed all the proof that I tried to cancel this to no avail. I am the point where I want to close my account and go to another Bank. I have been with Fnb for all my life and they can't help me with a simple stop order.