Field agent disclosing personal data and incorrect amounts on credit report

I had a loan with capitec 10years ago that I started paying and then moved over to debt review. Debt review messed up and I could not see my debt vome down. I requested that they release me they refused so I stopped paying them. Now I have 2 loans outstanding but the amounts that reflect that dmc has and that is on my credit file is incorrect I have never taken out a loan of 183 000. It was a loan of 55 000. Now there is a field agent looking for me and giving out my personal details to non account holders. I'm extremely furious. This is private and a huge data breach. I chatted online and the agent asked me the same questions over and over. No resolution and no explanation as to why this amount is so high and why this agent Handre is going looking for me and disclosing me details. Is this even legal what they are doing. This agent did not help me at all I need this agent to not go around looking for me and disclosing my details and I need this violation taken up seriously!