Bad Customer Service

I recently financed a vehicle from Primo Executive Cars through Nedbank MFC. After driving the car for 2 days and around 100kms, the vehicle broke down and was towed back to the dealership. I decided I want to cancel the deal and promptly let MFC know. It is now the 28th of July and I have received no proper feedback from the bank. So now:

1. I was debited for a vehicle I don't have in my possession which I promptly reversed

2. I am still struggling to just get this deal cancelled

3. I am having to rely on public transport and lifts etc until this is finalised and I can finance another vehicle

The bank has been of no help at all.