I feel like switching my bank

Firstly, my vehicle finance was declined by Nedbank yet other banks were approving it at a lower interest rate that what i was paying for my older vehicle. But that's sorted now. The issue at hand now is On the 31st January I traded my old vehicle to CHM Umhlanga, they have settled the account with Nedbank however Nedbank debited my account on 02 February 2015. I emailed [Email Removed] on 12 February and got a response from Shirelle advising me that the refund has been processed and it would reflect in my account in the next 48hrs. 6 days later wed 18th Feb at this point i still have not received the refund i emailed care@nedbank again and shirelle advisd me that i need to wait another 48 - 72 hours as the refund is still in a queue to be processed. After sending an irate email today advising shirelle of her incompetence of nedbank processes and for her advising me on incorrect information.i received 2 email from [Email Removed] and [Email Removed] ignoring my complaint about Shirelle giving me incorrect information and wasting my time. If she had given me the right info 1st time i would not be typing this complaint. Your *********** staff make me feel like changing banks