DPP DECODER PAYMENT PLAN FURIOS

You know I am tired of multi choice and now when I check my credit score via Compuscan it shows that I owe a DPP DECODER PAYMENT PLAN and I have been in arrears with it for two months,I'm so tired of complaining,I don't even know what is that because the last time I checked I pay my explorer every month,I tried to call Compuscan to find out about it but no answer,and it shows that I owe R2136.00,can they please explain to me what is this for