Arrears charges more money - Consumer Complaint for Bradlows - Head Office

I bought furniture at yo one of the stores and last year I reversed money 3times sum of r1000 b IPut I payed r250 or more on tht so now they say I our 7month plus minus r8000 and if I don't pay those arrears they will come and collect but I'm paying every month but my arrears going up every minutes why