Standard bank VAF date order date refused to be changed

I'm actually disappointed in Standard Bank VAF department. Since I bought my car since last December 2017 I was told I will start paying end of Feb. I have since been debited on an incorrect date. I get paid on the 25th of every month but the bank debit me on the 21st of every month. where I have never authorised to be debited on the 21st of the month but I have tried to call the call centre and try to resolve this instead am meet with a no I cant change the debit order , I have to pay twice my monthly installment to change my debit order date.

Funny enough I have been in arrears since I stared with contract because of the debit date that the bank debit me and it keeps on bouncing, but I have had a set off go through several time is my account on 25th when I get paid. I was told they cant change the debit order date but they can make a set off in my account on the day I get paid?

I want the head of Standard Bank VAF to assist me with this account and also I need the email address of the complaints resolution centre because this account has spiral out of country and it just beyond me right now.

Please can someone help me with providing me an email address to the relevant heads. Complains at Standard Bank get back to me.