Appalling service form ABSA business banking

I am extremely dissatisfied with the service I have received from ABSA. A Trust account of which I am one of the Trustees was blocked on 1 August, I then contacted Business Banking and was told it is due to FICA requirements and should contact my relationship banker at Menlyn Maine. On 2 August I sent the first e-mail, I received no response and followed up the next day. I was then sent documents to complete which I provided on August 15th. Since then I have been following up almost on a daily basis to check if documents are in order and if any other documents are required. No response received from my relationship banker. If I try to call no one picks up, eventually yesterday I got hold of the person who informs me that I need to provide an additional document, which only delays the process even further and could have been resolved if someone had responded to my e-mails. I have been a customer of ABSA for many years and I am seriously considering changing banks