Poor business banking

I have been requesting information and a call from my business banker at the Rosebank branch since 13 December 2021. My business has been banking with Standard Bank for 20 years. I am so dissappointed and frustrated. I've tried the call centre, I tried emailing the complaints, I've emailed my banker the request numerous times. She tried calling me 3 weeks ago, but i was in a meeting, and then followed up with an email asking when she could call, I responded to that - but I am met with silence again . I did not want to complain on this platform, but I don't know what else to do in order to get Standard Bank's attention.