Ackermans New account process

I app**** for a new account in Dec and sent through my Payslips, Aug, Sep and Oct which were received but they advised they needed Nov. I sent through Nov and Dec Payslips which they received So in total Tenacity has 5 months Payslips. I started receiving SMS's saying they only received 2 months Payslips and upon phoning the call centre they are now requiring 3 months Bank statements. Why could it not be requested in the beginning of the entire process that they need both 3 months Payslips and 3 months bank statements, and only yesterday they requested the bank statements and I have spoken with multiple agents and even requested a team leader or manager call me back which I was informed there was no one available and they could not call me back. I advised them to either cancels the entire process or have someone call me back.