Unfair treatment

I feel it's unfair treatment, yes it is my fault that I didn't realize that the debit order bounced 1 month, vodacom didn't even notify me that the payment wasn't trough... They just se t report to credit bureau that I'm. I arrears, by my understanding there are consultants that follow up on missed payments before you report to credit bureau, I only missed 1 month without any communication they just list me missed payment, it's unfair because I have never missed a single payment.