Ackermans - *********** and irresponsible

it has come to my attention that I have been listen at Credit bureau as 1 month in arrears, So I spoke to a customer service agent at Ackermans, because I was deeply concerned and disappointed, as I paid my December 2020 instalment, on the 27 November 2020....I pay my installments almost 2 weeks before its due, for your staff and company to load my payment so late, which resulted in my arrears on my credit report. How can you people do this to me, I will be rejected by the bank for a Home loan due to your negligence. How can you easily just do this to a client, the proof of payment clearly states that my installment was paid on the 27th November 2020, even so your company knew that it was going to be captured later why would you still list me, knowing it's your fault. I have sent a formal complaint to the NCR, I'm reaching out to the Ombudman today, I have been assisted by 2 if your customer service agent that was very clueless and *********** and let me hold for long periods of time, they don't keep me updated while I'm on hold, they even transfer me without my knowledge only to explain my case again to a different agent and then the call drop, and no1 calls back, when I called in again to ask who was the two agents I spoke to previously, they cannot even tell me who worked on my account, but the calls are recorded, this company and staff disgusts me. I wasted so much airtime, I could've just not pay my instalment then I know why I have been listed at the bureau.