Vodacom unfair payment reporting to credit bureif

I am a Vodacom contract customer for approximately 13 years. I pay my account by eft between 1-3 day every month. I have paid the account religiously for many years. Apparently, if a customer doesn’t not agree to a debit order, he must pay on the 1st. This seems like a punishment for consumers. I recently discovered that Vodacom have reported me for late payment because payments were made on the 2nd. They refuse to permit me to pay register as a payer on the 3 or 5. To refer me as a bad payer is unfair and constitutes unconscionable bully tactics by Vodacom.