Billing Issue

On the 24th August my account was debited R172.37 sooner than my debit order date which is the 25th which is my pay date resulting in a return debit at my bank. I then paid the amount manually on the 27th August of R172.37. On the 28th of August Telkom debits my account again which might I add does not reflect on the September statement but its on my bank statement. I now check my invoice for September to find that I have been billed R 202.70 for a Payment Rejection fee ********** 48 26 Aug 18. What bull **** is this? Firstly you debit me a day before my debit order date which result in charges with my bank and then add your own charges to my invoice. I am due to upgrade my account but If this is the case rather cancel my contract.