Have loan account with Direct Axis, but Wesbank (and Direct Axis) debit my account

I regret the day I took loan from Direct Axis, on monthly basis Direct axis and Wesbank debit my account. I have to reverse the amount debited by Wesbank because I have no clue why they are doing so. I called Wesbank several times, and each time I was referred to Direct Axis. I have been calling Direct Axis since January 2021 (have different contact numbers on Google), the phone rings and prompts you to put in your ID number and then nothing happens. I have not signed anything with Wesbank, Direct Axis fix this as I dont expect Wesbank to debit my account again this month for something I did not sign up for. Wesbank also fails to give answer on why they are debiting m account. I entered into an agreement with you and not Wesbank.