Loss of business sales/clients, time with added frustration and possible risk of business bank account tampering- Nedbank Scottsville Pietermaritzburg

Ive recently joined Nedbank moving my business account from another bank to Nedbank and opening a cheque account as well. Im with Nedbank for only a month and the service is abolutely dissappoinitng. When collecting my business bank cards the bank made duplicates which were to be discarded of. A week later I tell my banker (Leon) to open a cheque account linked to my business account - my request was ignored. Upon visiting the bank I meet the banker who obviously feels forced to make up some stupid excuse (Telkom network is troublesome) which I ignore. While in the bank the dupliacte cards for my business which were supposed to be discarded of are produced again - my surpirse to see what Nedbank thinks of my business that my cards can be floating around the bank obviously not discarded of. While in the bank my cheque account is opened but only later to realize while trying to access the account from home my OTP numbers are been sent to a number I dont recognise and I start wondering who has access to my account if not me. I contact the banker who says he will resolve this and ensure the numbers are changed and that all I will have to do is visit the bank just to sign for the number change. I visit the bank again to wait it a queue, later called to the teller to change the cellphone number and 24hrs later when i attempt accessing my account still the OTP to going to the same number I dont recognise bearing in mind I have now made 2 trips to the bank. Im now losing business sales as I cannot access my accounts and after numerous emails to my banker his still ignoring me. Im now at a point where Im kicking myself for joining a negligent bank with bankers who have a huge lack of interested and now costing me money. ITS A FIRST IVE EVER EXPERIENCED WHAT IM CURRENTLY EXPERIENCING - NEDBANK SCOTTSVILLE PIETERMARITZBURG.