Failed to pay Lancet

Good day on 05/11/2015 discovery requested me to do blood test through my doctor and went to lancet lab and they authorized it. After that from R1012.30 payed R703.50 and R308.80 pending can't pay l have spoken to Roweda, Sumeya and finally Veronica for past 4 months and lancet keeps sending me bill, pls follow up with my case member number *** meantime am paying R1600 every month premiums its there request not mine and authorised themselves so were am l wrong to comply to their demands and become and victim and everytime l call them have to start al***** the issue and feels useless as if l dont know my story. their number ***....discovery..or Veronica *** spoke today trying to sort if can not sure very frustrated.<br>