worst service ever

i received my vodacom bill over R4200. i disputed the amount as i was charged for data and minutes while i still have data bundles available as well as free minutes. i just upgraded my contracted to the red advantage where i receive 750 free minutes and 1 gig of data and i pay R149 for another 1 gig data.....with having 750 minutes and 2 gigs of data my bill is still so high, when i called int he agent could ot understand what was going on and said she will log a complaint call and i will get feedback within 48 hours. i then called about 3 times after that and the agent told me that i will get feedback within 14 working days. i logged this complaint on 10-03-16, this is ridiculous service. i DO NOT want my debit order to go off on this high amount, they must sort out my query before my debit order goes off. this is the worst customer service ever. who takes 14 working days to resolve a query. please get back to me urgently as i will not tolerate this horrid service. i have beeen a vlient of vodacoms for almost 15 years. i will change my service provider if this is the service i receive.