Payments not allocated

Online payments not allocated to my account and still I am receiving messages that my account is in arrears after I paid my account on the 25th on the online platform which they offer and then I get messages 7 times a day like this "Dear MS MM HUTTON, your Identity account requires an immediate payment of R283.33 today. Ref: 10121138009084. Identity Collections Department. 0212001903" after I've sent the proof of payment since the 25th every single day and on all their platforms available. This is unacceptable and I will take this further with the onbudsman should I not receive urgent feedback.