Telkom contract stuff up

So after being provided with wrong information about renewing my smartplan 100, I went to the Telkom at Waterfront to get a new contract. I was advised to first change my number to prepaid and then get a new smartplan 100 contract. I requested for the same number to be used for the new sim only contract. After 2 weeks (17 Dec), I got a call that the sim is ready for collection. Only to find out that it's a sim with a different number. Then the staff said they'll sort it out and on the 28 Dec they said the sim was now on the new contract but I realised I was off the network as I couldn't make phone calls or use the internet. When I called the Waterfront branch, they informed me to do a sim swap. I did that and noticed that between the 1st and 5th of Jan my data was already depleted. I called a couple of times to purchase data of 25MB twice and 50MB twice. I logged a query as I couldn't understand how the 1gig & 150MB of the contract were already depleted. On the 11th of Jan, a consultant called saying my number is actually both on prepaid and contract!!! Telkom really sucks!