Nudebt - Useless debt collection company

This company has been harassing me daily with threats of judgements and bad credit listing by mail and SMS, for weeks. This for a sum of R800 apparently owed to Telkom who I owe nothing. I have been in to Telkom, who confirmed and issued a statement showing I owe nothing. Proof of final settlement on closing account was sent to NuDebt, who acknowledged there is no case, in writing. Still the threats and bullying tactics continue, daily. I have phoned them a number of times ... "it takes a few days to remove it off the system". Apparently not ... they are beyond frustrating. What a useless company with clearly no internal systems in place. Hopefully HelloPeter will get a response!