Extremely poor service and negligence

My son is a client with Nedbank, and is extremely disappointed with the level of customer service he has been receiving from Nedbank regarding his homeloan. His recent experience has been frustrating and unacceptable, and due to their negligence and incompetence he has been given unnecessary penalties, interest added to his loan, and credit score negatively affected. He has encountered long delays, poor communication, and unhelpful responses from customer service agents. His queries were not resolved at all, and he feels that his concerns are not taken seriously. Despite multiple attempts to get assistance, the service provided is slow and ineffective. As a customer, he expect professionalism, clear communication, and timely resolution of issues. Unfortunately, Nedbank is failing to meet these basic expectations. I hope this complaint receives proper attention and that Nedbank takes steps to improve its customer service and address his issue as a matter of urgency.