Unfair Policy and harassment

I was retrenched last year in August and the short term insurance paid my instalments from October 2015 to March 2016. I phoned the call centre and informed them that I will be unable to afford monthly instalments going forward and I requested a discount on the o/s amount. My sister was willing to assist in this regard so that my credit wortiness is not affected when potential employers view it. The consultant, Yolanda spoke to her manager and then informed me that I do not qualify for a discount as I am only one month behind. Only people who are 3 months and more behind qualify for a discount. I find this practise unfair and after a long discussion, I said maybe after 3 months, I will raise the amount needed so that I can qualify for a discount. After that phone call, everyday I get calls regarding the o/s amount and I was informed that their machine will keep on dialing my number until I make an arrangement. I am the one who was upfront and called them first. They could not help and now I am being harassed! Should I go to the Consumer Protector now?