Deduction!!

I'm writing for the second time to you guys I even went to your Branches, regarding the money that is being deducted from my account 3 months ago and still deducting, I was told it's blocked in one of your branches but on the phone you suggested I must change the account number but when I got to your branche they told me I can't change it because I have a loan with you, it's not like I'm changing the bank it's just I can't take it anymore this deducting of R594 every month on my account, the number that I was given to call these people apparently I'm not in their system they don't recognize me even if I give them my ID number, so tell me what must I do???? The money can't be reverse and I can't change the account number so must still let these unknown people to deduct my money or should I just leave you guys because I can't take this anymore... I'm ****ed seriously because I was told no deductions its gonna go off this month *** Thembela Mbali