Absa pestering me over resolved issue

I have been called over and over for the last 2 months over an account in arrears. The payment was made as advised by their call center agent through the public recepients facility on the FNB app with a reference number also received from the agent. It was then concluded that the reference number I had used was incorrect and that the funds will be re-allocated to my account somewhere in the beginning of the previous month.

The issue is still not resolved because I am still being hounded