Never received invoice for the debit order executed

I got my line activated on 11th of August 2017 and got 3 different invoices for 588 only on 25th, 28th and 29th of August. When I asked why so many invoices for same amount, I got email telling that sent by mistake. I never ever received an invoice on the 18th of August neither in my inbox nor in junk email. I kept funds in my account for the debit orders I was aware of and when your guys run an order for 986.32 it failed obviously due to lack of funds. Then today I made a payment of 1036.32.

Why the hell should I bear the cost of your mistake? Bank charged me 115 for failed debit order and you charge me 50 for non payment. The gentleman Kennedy Ntikana telling that I would have deleted the email received. How come you accuse your customer like that? then he sends me the terms and conditions telling that I will be billed prorated. Yes I signed the terms and conditions but who really reads it? unless I get an invoice I will not know that you are debiting X amount. Fix this excess amount I paid in my next invoice else your bad rating will just go up by one extra. I want you to fix if you care for customer. ZAR 115+ ZAR 50 amounts to ZAR 165 which I want you to bear and not me. Running a debit order with assumption of sending invoice is wrong just because I give you authority to run you can not run a debit order for the invoices I do not receive. Hope you understand.