Unpaid Billing Refund

I was debited R471 instead of R269 for my contract with Telkom, and the reason for this as I am told, is that Telkom did not receive money on the 24th in my account, yet I get paid on the 25th (even if the 25th is over a weekend). Telkom still got their money on the 27th, in the same month, yet I am charged R200 for an unpaid. I don't care if the contact says, if my payday falls over a weekend they will debit on the Friday, debit on my payday which is the 25th that is when I get paid. How did you determine that I am paid on the 24th? Was my employer called to confirm? And why is it that you do not have a 3 day tracking on the collection schedule sent out, before charging customers R200 for an unpaid debit, which you still received payment for on the same month and within 3 days. This is a ******* and I want my money back.