feedback regarding a deposit made

I have made a few deposits at the bank monthly and on three occasions the reference number ended up being incorrect. I spoke to Mr Lukhanyo Makawu who said he will find the deposit slip I filed in to see if the mistake is on my side or theirs. It's been over a week now and I'm still waiting on the call from Mr Makawu. Another issue is this number system they have in Nedbank Bellville , whereby you go there in your ONE lunch break for something as simple as a statement, but u end up sitting in the bank for an hour, not getting assisted. In March month I visited the bank three times to get a statement, but did not get it as my lunch breaks were up. So now I am in the process of closing my accounts with Nedbank as they are delivering a pathetic service.