Devious telephone sales operators for Telkom Mobile

Telkom mobile contacted me telephonically for a new deal, within January. I was not sure what my current contract package were at the time, since I was at work and could not look up the details, which relayed repeatability to the sales person. The Sales operator insisted that she was providing with a better package (double the gig) that I currently had for R200 less a month. Therefore, I obviously consented to this "magical" package. However, this operator **** about the details of my current package. As soon as the new package arrived I realized that I was completely mislead. My current package was actually 150gig night and 150gig daytime data. The package they provided me with is 60 gig day and 60 gig night time data. This is massive difference, in fact it is less than double of my current package, I would never have consented to this package if I was provided with the correct information at the start!!!! The Wi-Fi device I received is not working properly, (something about the sim not always connecting as it should). And now Telkom wants me to pay R1700 for this broken device that I would never have taken, if I was provided with the correct information originally. I have already been ******ed on the telephone by Telkom's lawyers, I have to pay for this device (within a month of receiving it) in a once off payment (no payment arrangement), or they will just activate the package that I DON'T WANT ( I have no choice and say whatsoever), or never wanted if they had just given me the right information. As a consumer I feel powerless, as if I have no rights, all because of a devious telephone sales personnel.