Unfair treatment. Debit not set on correct pay date

I have an existing loan with Wonga. The debit order is set on debit check. According to the website im behind with 1 installment. How is that possible? I dont even have access to reverse it, in fact you can see on your system that i didnt reverse it. Why are you dragging my credit rating through the mud. I want to apply for a car next year and look what Wonga do. Ive never been in arrears with Wonga. Debi check supposed to be safer and if you didn't deduct why not? The debi check supposed to attempt deducting from a client's account until the payment is received and if not then call me to arrange for another deduction to take place. How is it possible that you can deduct every month, please see my bank statement you deducted from my account but now im in arrears. That doesn't make sense. I get paid on 25th of every month and that was our agreement. September month Wonga initiated deduction on 19th September a whole 5 days earlier than my pay date obviously i wont have enough money in my acc before payday. Wonga is not upholding their side of the agreement now you want to add interest for what, for who???? Please explain to me what went wrong why are you putting me in a disadvantage position why? Now i cant apply anywhere because of wonga. Why didnt you call me or send an email or attempt to deduct on 23th September i must see on your website, now its my problem. This is not fair. October month you got your premium on time , how could you not have deducted in September month. HOW MANY OTHER CLIENTS ARE EXPERIENCING THIS. I get a generic email on how to settle the arrears. FIX THIS NOW, FIX IT AT THE CREDIT BUREAU. Clear my name of the arrears and interest its not my fault.