Disgusting *********** service that ended up costing me R1000 in banking fees

I have been requesting to change banking details since end of November 2020. Till today nothing has been done, I have no response from anyone, I filled in forms but have had 0 response from anyone! They have been debiting the wrong account which has now landed me in banking charges of R1000 and now I cant close that account until these fees are paid off...I don't have funeral cover anymore or I'm not even sure what on earth is happening as I have received no feedback