Debit order and customer service ZASTRON branch

Good day

I've a Lewis account that was opened late last year at Zastron Branch and I did a debit order and signed a debit check mandate for it to debit on my salary date monthly. Only to find it doesn't then went to the Zastron store several times to rectify cause they said its system issues then paid cash but the store manager promised me it'll be fine the following month. But it did not and I'm a very busy person don't find time to go to the store now the store manager went to my work place to demand money yesterday and today. Even called the customer service desk to assist or maybe give alternative bank details so that I can do EFT if the debit order doesn't go off spoke to some rude lady over the phone she hangup on me as I was explaining my situation. So I need to assistance to setup the debit order or alternative bank account to make EFT as I cannot go ahead and give the store manager cash for her to me make payments on my behalf and another thing I need some clarity how does Lewis conduct its business why would their employee go to my workplace, discuss my personal issues with my colleagues. I mean what happened to confidentiality(POPIA)?. Please ask the Zastron Store Manger to have some decency when it comes to customer service I do not appreciate that at all. Thank you