POOR SERVICE

I just purchase vodacom pay as you go for R12 and I bought 60mb for 60 minutes but I never used that and this is not for the first time I complain about Vodacom but they never attended to my complain, if it is not their poor coverage it is their poor network and their terrible service they alway give me. I am not happy at all and I cannot keep on complaining, vodacom must fix their service immediately. I want my airtime back or they must give me my MB back. I am really worried about this service.