Unable to change banking details for debit order

Switching banks and went today with a confirmation letter from FNB to update all my debit orders. Everyone accepted this letter except Capitec Bank. They expect me to provide them with a bank statement reflecting by salary deposited into the account or a confirmation letter from my employer. As it's a new account I my salary is not paid into it yet. Phoned my employer and they have never done this. According to them the banks just phone them to confirm that the information is correct. I've had this personal loan for 3 years and never defaulted on a payment and then get told that my word is not good enough for them. Where as other banks take me by my word and not treat me like a ****.

Also never experienced such rude and *********** staff in my life.

So this month you will debit order a non existing account and I will pay you from now on myself. And probably never update my banking details with you again because I refuse to be treated like a ********.