Worst Service ever

Bad service. *************. Can't keep promises. When my contract ended and was closed I contacted the for years and couldn't get assistance until I contacted hello. Peter. Then Vodacom called me and they said I should pay R211 and everything will be sorted. They said I owe them R211. Which I paid and sent proof to them. But still it appears as I'm owing them the same R211 on my credit score, this has been months appearing that way.