ABSA Homeloans threatens 66 year old lady!

Where do these people get off??? I have been paying my mother's bond for years now, at least 5 years off the top of my head, by means of EFT every month. Last month, for the first time I forgot, eventually on the 7th of December realizing my oversight, I immediately logged into my Internet Banking and did the payment. The very next day a ****y little call center agent had the audacity to phone and threaten my mother with credit rating reductions, even though my mother did tell him/her that the payment has been made, just late. NEVER before has a payment been made late to this account, nor my own, which is coincidentally also with ABSA Homeloans. So, please, ABSA Homeloans, here on this very public platform, please explain why your call center agent felt the need to threaten my 66 year old mother with credit rating reductions? Don't say you will contact me privately, I want a public explanation please.