Big Deal Failure

Good afternoon I am currently a customer of Telkom as I have my cellphone contract with them and u have a data package with them. My data package was due for a upgrade and I went in store. I informed the sales rep I wanted the big deal of R349 they were advertising as this was for the tablet and data. The sales rep took my application and submitted it and only afterwards told me he was supposed to submit it as one deal but he did it as 2. I now got a email from the store telling me I cannot get the tablet only the data part of the deal. Please explain to me how a deal that is advertised gets broken down like that? I did not want the data on its own because my current data deal gives me more data. I went online yesterday and I spoke to a online consultant who told me I must go back in store and they must rectify it and when we spoke to the consultant he said he would do so. Now I get an email telling me I cannot get it and a story to it. Why advertise a deal when what you advertising is not true, like I said before I don't want the data deal on its own however Telkom was very quick to bill me for it already and I have not even taken ownership of the device. I signed for nothing and I am not going to sign for anything until this is fixed. If it means I must go back to my old package then it fine I will but I am not take half a deal when that is not what I asked for.