account paid in full and I have been blacklisted

I paid my own edgars account in full on 9 April 2015. Received an invoice of R45 on 13 April paid it immediately. Today I was blacklisted and when calling I was merely transferred and had eight employees put the phone down on me I spent around R200 calling Edgars... I am sure all my calls can be traced on your telephony systems. I also now owe R2.53 as per today's automated answering system in place with Edgars, between the 13th and today how does the R2.53 arise. <br> Why is no one able to assist or unskilled to provide customer service? <br> Why have I been blacklisted when I owe Edgars nothing.<br> Why did Edgars not inform me that I was blacklisted?