Disrespectful with poor customer service

I’ve been a client with nedbank since 2011 till date and I have never experienced such poor service to them it is disappointing. My account was debited 3 times in 28 July 2021 and the reference said maintenance wich was a wrong amount to begin with when I called the call centre as I was told I can not be helped in the branch on the 25th of August asking what is going on I was told it’s a communication error. They said they logged a call and I was given a reference number till today I’m still waiting for that reversal in my account. I didn’t even get notification that says my account is debited I saw it on my statement. The Team manager who is responsible for such didn’t even reply on my email that I sent him Which was on the 4th of October when I called again!