Nudebt and absa

This company who is a debt collecting company along with their client absa think they are god. A lady called brianna smit sent me a 48hr notice to pay but the funny part is i paid the debt in february already. They and their client absa is relentless. I have been diagnosed with depression due to their relentless stalking Why does no one put a stop to companies like this or why doesnt people drag their asses to court and make an example of them. She is quick yo call my place of employment but not quick to send signed letters i am a single parent struggling to keep head above water. I have now had enough