Ignoring Customer Complaint

I had a bad incident when calling the Nedbank Homeloans department, spoke to someone and the person after requesting for a Manager dropped the call in my ear. I called back and spoke to someone else and requested to speak to the Manager, also not available and it was advised that I need to email the Manager. After I did that the Manager with title : Team Leader -Multi-Product Service does not reply to my complaint. After threats she finally emailed me and stated she will get the recordings and investigate and let me know. This happened 10/11/2015 @ 4:47. I requested feedback on the 13/11/2015, and receiving a read receipt, she did not respond. I once again requested feedback the 20/11/2015 with the threat that I will escalate the complaint against her and getting a read receipt she did not adhere to the time I wanted feedback. By informing me that she is still busy with the Investigation would have helped but to no avail. This is the worst service I received from Nedbank, and to think I have been banking with them for many years and have my homeloan there. Its as if they just dont care about service. If this is the caliber of people Nedbank employs I want out. <br>