Harassment Calls and Threats when I pay every month!!!!!! LEAVE ME ALONE!!!!!

I have been under debt review for months now and still get harassment calls from FNB saying they are taking legal action against me when I have a formal letter from my debt councillors stating I am under debt review and have the emails from the debt councillors and FNB stating they must stop calling and harassing me! The reason I went under debt review is because I want to clear my debt and every month an amount is paid to FNB for my loans and you still have the ****** cheek to call, harass me and demand I pay when I have been paying through my debt councillor every month! Stop your **** and get your **** together!! If you decide to continue will these threats I will do everything I can to post on social media and continue to post reviews on Hello Peter to harass you bac****! Wish I never signed on with you!!