VODACOM TAKING ME FOR A FOOL

I posted a review about a week back Vodacom then emailed me and said i need to do a sim swap and send the receipt to them to be credited my account never asked for any of my details, then we done the sim swap and last week and was told to wait two hour for us to get our original number it now Monday and still we still have a prepaid number but we paying for a contract.and emails get read but they do not respond to it.I am over frustrated about this its not our mess up it on their side.First they double charged us for our contract then going into the second year the sort it out and then just decided to change the number to pre paid that i have no idea whose number it is.please advise me if i can take further steps in the matter as the are not being any help