Poor Service

I'm paying for the service that I never received...I last used my simcard I think 3 months back but they keep on saying I have arrears and I paid almost R1400 to vodacom contract and the simcard is not working I went to vodacom in The Grove Mall in pretoria and reported my problem buy they just took my phone and switch it on and off saying they refreshing my number and still didn't work and from my side I kept on paying I started by paying R800 and R250 then R254 in 1 month still I'm unable to use my data.Vodacom staff please do your job you were supposed to see that I paid my account and update ur remarks .I hate vodacom i hate it and I will never recommend vodacom to anyone of my friends and family never