Unfulfilled Promises from Nedbank

I have since been waiting for a feedback from Nedbank with regards to my complaint about application that was made on the 2nd of August 2019 , the agent on the other side promised to call me after 10 min with paper to sign. I then called on the 7th of August 2019 and spoke to the agent who promised to sort out my challenge in no time but disappeared on me. I waited until Friday the 9th of August to call and complain to which I spoke a gentleman who registered my complaint and he promised that I was going to be contacted by the manager before 16h00 within that day to which I am still waiting for a response till today.

I’ve got a problem with Nedbank officials not keeping to their promises . I've been using Nedbank for over 5 years and had never had a challenge with this bank. I took my account to Nedbank due to bad service from my previous bank.