Continued Harasment

Norman Bissett continues to harass me by claiming that I have an loan with Standard bank which is not paid. I have already send them proof, from Standard bank, which states that the balance on the account is R0.00. I also gave them proof that because this, and other accounts, was paid up, I was no longer under dept review. They promised me to not bother me anymore, but I constantly get calls and emails from them stating that I do not pay the account with them.