Vodacom Schmodacom

Someone, not me, decided to change my contract from top up to open line. My monthly cost went from R605/pm to R8100 in January and R2900 in February before shutting down the Sim cards. I have been trying since end Feb to sort this out. My numbers have now been barred and no one has come back to me about my complaint. I am so done with this complete lack of responsibility and service.