I had a person email my employer a few times with some ridiculous claims like I was stealing from the company and I had a good idea who was behind them but obviously I needed some proof. I contacted a company in Gauteng and they referred me to intertel.co.za, I dealt with a lady Angela who is top of her game and super sweet. The long and short is that thanks to Intertel I have the proof I need and I have opened a case of crimen injuria against the person. I don't know how they are with other types of work, but for this they deserve 10 out of 5;-)_