Inconvenienced and Disgruntled Customer

Very unhappy with the lack of response to an email complaint which I sent on 30 September. This was a sale that went wrong, and even after being advised that my application was declined due to them having too many quotes on the system, something that is NOT in my control but theirs, they went ahead and debited my account without authorization. This has resulted in authorized debit orders being returned, which has a negative impact on my credit and banking profile, not to mention the dishonor fee. Queried it with the Sales representative who had all sorts of excuses and still had the nerve to come back and ask whether I would reconsider. How do you reconsider when you have been advised that the application has been declined. Where is the acknowledgement and updates / feedback? Where is my letter of apology and explanation? Do you even care?