Vodacom R 199 / 20 Gig data per month contract

I was approached by Vodacom a few weeks ago, asking whether i would like to purchase a contractual 20 Gig data bundle per month, at cost of R 199, necessitating that i enter into a 24 month contract. When i was told that i receive a sim card i mentioned to the consultant that i don't want another number. He then went on to explain that i don't need to use this sim card, i can leave it lying in my drawer and then transfer the data to mobile. if i'm not mistaken, this was mentioned twice during our telephone conversation. I agreed based on the fact that i could transfer the data to my number. Once i had received the sim card, i registered the number to the Vodacom mobile app so that i can transfer the data to my number. No success. so i contacted Vodacom customer care who mentioned that i can only transfer the data to another number after 25 days and that i should try again to transfer after the 25th. No success. So i went to visit the mobile data store in Tygervalley only to be told that this is not how the contract works and that i have to buy a mobile router at an additional cost of just short of R 800. I was then told, by the Vodacom employee, that i am not the first customer to complain about the ambiguity of the sale of this particular contract. Now the signal of the mobile router is non-existent. I am so irate about this whole situationl Vodacom, please never, EVER call me again to sell me any of your products. I now have 29 Gigs of data that is of no use to me. I am highly disgusted that Vodacom could allow their staff to blatantly lie about the contract. Also, i am yet to receive a copy of my contract.