Harrassed for months by ECSA

in 2025, I processed my ECSA annual fees, as per the invoice they send me. Then a month later ECSA sends a email saying "oopps they made a mistake in the amount", then they handed over my account to MRT Recoveries, to pay the outstanding R731, due to no fault of mine. Since then, these people have been harassing me since Oct 2025 to pay the balance. But I keep sending ECSA emails after emails stating the following, in the last 8 months, which the still have not done to-date. 1. My annual ecsa fees can be processesed ONLY ONCE , thats the rule of my company, so I cannot process the 2025 outstanding balance anymore, as I already processed it once on the old invoice 2. To solve this problem which ECSA created themselved, I asked ECSA literally a 100 times now last 8 months, to : a) to send me a invoice for the outstanding balance R7231 not just a threatening email, as I cannot pay willy nilly just because I received a email. b) They add this extra R700 to the new 2026 bill, so that I can process it. NONE OF THE ABOVE IS DONE TO-DATE, BUT THEY KEEP HARRASSING ME EVERY MONTH LAST 8 MONTS TO PAY THE REMAINING R731 BY SENDING ME TREATENING EMAILS Its like I am talking to a brick wall !!! This is very poor service from ECSA and pure harassment, and I am so sick and tired of them,