Impossible to change debit order date in 2021!!!

Capitec Bank is pathetic really. The "manager" says it's impossible to change a debit order date. This is 2021!!! My employment contract states I get paid on the last day of each month. Since I've worked here our pay date can be any day from the 28th to the 31st and that's why our contract states "the Last day" which is understandable. All I want from this bank is to change my debit order date so that my Access Facility does not show arrears every month but no they can not do this and they blame it on "the system". Then the manager Melanie Chetty goes on to say "should the salary drop reflect on the 31/05/2021, I will then amend the pay rule accordingly" But just yesterday I was told it can't be done cause "the system" does it automatically. Lady don't you get it? I want it done on the 31st to be safe cause every month on the 25th it's going to bounce!! My account then goes into arrears and I can't use the access facility and to top it off my credit score dropped after they told me this wouldn't happen. Why don't you understand this. Shouldn't it be the clients decision when the debit order should go off. I can't believe this people. Please don't waste your time moving to Capitec there's so many small **** there that don't make sense.